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Data Inequality: Quadratic Equations: Concept and Technique (in Hindi)
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Amar Sir is teaching live on Unacademy Plus

Amar Sir
Teaching with a unique way 'Math Dikhta Hai', developed over 24 years. Taught 50k+ students with 5k+ positive results

U
Unacademy user
sir you are the great teacher
great technique......thank u sir
CT
Sir could you please take classes in english. Im from kerala
sir in English will be very much grateful
very effective in unacademy as well as in youtube
  1. A renowned faculty of Objective Math, Personal Interview/GD General Studies, Indian History An experience of 24 yrs of teaching at Jamshedpur, Ranchi, Bokaro [Jharkhand] & Sambalpur[Odisha] Thousands of successful students in Bank/SSC/Railway/Civil ServicesAmar Sir ailwaV/CIV l Services The slogan is: Math Dikhta Hai


  2. IBPS RRB PO 2017 Data Inequalitv Quadratic Equations


  3. IBPS RRB PO 2017 Data Inequalitv Quadratic Equations


  4. Data Inequality (Quadratic Equations) Give answer: (a) If x <y (b) x > y (c) ifx Sy (d) if x y (e) if x = y or no relationship between x and y can be established. If x = 6 or 10 and y = 15 or 20 15 10 20 Then, x<y. Ans. is (a)


  5. Data Inequality (Quadratic Equations) Give answer: (a) If x <y (b) x > y (c) ifx Sy (d) if x y (e) if x = y or no relationship between x and y can be established. If x = 15 or 120 and y = 6 or 10 10 15 20 Then, x > y . Ans. is (b)


  6. Data Inequality (Quadratic Equations) Give answer: (a) If x <y (b) x > y (c) ifx Sy (d) if x y (e) if x = y or no relationship between x and y can be established. If x = 6 or 10 and y = 10 or 20 6 10 20 Then, x <y. Ans. is (c)


  7. Data Inequality (Quadratic Equations) Give answer: (a) If x <y (b) x > y (c) ifx Sy (d) if x y (e) if x = y or no relationship between x and y can be established. If x = 10 or 20 and y = 6 or 10 6 10 20 Then, x2 y. Ans. is (d)


  8. Data Inequality (Quadratic Equations) Give answer: (a) If x <y (b) x >y (c) if xSy (d) ifx2y (e) if x = y or no relationship between x and y can be established. If x 6, y 6, then ans. is (e). Or, x = 6 or 15 and y= 10 or 20 10 15 20 6 Then, Ans. is: (e) No relationship between x and y can be established


  9. Theorem: If and are the roots, then the corresponding quadratic equation is: In other words, if the quadratic equation is x2-( + )x + -0, then and are the roots. For example, if = 2 and 3, then the quadratic equation is x2-(2 3)x + 2x3-0 or, x2-5x + 6 = 0 Or, if x2 - 5x +6-0, then x2 - (2 + 3)x + 2x3-0 That means, = 2 and = 3, when compared to X-( +


  10. How to find and from the quadratic equation ax2 + bx + c = 0 ? First of all we multiply "a" and "c" with sign and break the product "ac" into two parts as (a + c) or (a - c), according as the sign of the product "ac" is (+) or (-) respectivelv. Then, compare with x2-( + )x + -0 to get the values of an .


  11. Give answer: (a) If x < y (b) x > y (c) if x y (d) ifx2 y (e) if x = y or no relationship between x and y can be established I. I. x2-24x +144 0 (x)2-2xxx 12 + (12)2-0 (y)2-2xyx 13 + (13)2-0 (x-12)2-0 x-12=0, or x = 12 II. y2 -26y + 169-(0 (y-13)2-0 y-13-0, or y = 13 y 13 x = 12 Ans. (a) x y


  12. Give answer: (a) If x < y (b) x >y (c) if x y (d) ifx2 y (e) if x = y or no relationship betweenx and y can be established. 5. 1. 10x2-7x +1-0 II. 35y2 - 12y +10 (2+5) 1 1 10 10 5 2 v (12) (5 + 7) 1 1 35 35 75 Ans. (c) x<y =5 7


  13. Give answer: (a) If x < y (b) x > y (c) ifx y (d) ifx2 y relationship between x and y can be established. 7. I. 12x2 + 17x + 6-0 (e) if x = y or no II. 6y2 + 5y+ 1-l (17) (-9 -8) -3-2 6 6Ans. (e) No relation between x and y can can be established 12 12 43 -1 -3 2 -1 (+12) (+ 6)-+ (6 x 12) 2 2 3 2 3=9 8 =6x1


  14. Give answer: (a) If x < y (b) x > y (c) ifx y (d) ifx relationship between x and y can be established. 8. 1. 20x2 + 9x +1 = 0 y (e) ifx = y or no II. 30y2 + 11y +10 20 2045 30 30 -1 4 -1 -1 Ans. (c) X sy 2 2 5=5 4 =6 5


  15. (e) ifx = y or no Give answer: (a) If x < y (b) x > y (c) ifx y (d) ifx relationship between x and y can be established. 9 1 x2 + 17x + 72 = 0 y II. y2 + 19y + 90-0 17) (19) -(-10 9) or, y--10 or - 9 10 Ans. (d) x 2 y 1 2 2 2 3 3=9 8 2 3 3 5 =10 9


  16. (e) if x zy or no Give answer: (a) If x < y (b) x > y (c) if x y (d) ifx relationship between x and y can be established. 12 23 14. I. Or, 5x--11 Or, x =-2.2 12 12 Or, -4y-12 Or, y =-3 Therefore, x > y Ans. (b) x>y


  17. Give answer: (a) If x < y (b) x > y (c) ifx y (d) ifx y (e) ifx = y or no relationship between x and y can be established. 16. I Or, 7 21 42 4 16 y 5 10 VX , 21 42 or, 80 or, y = 6400 or, x = 400 Therefore, x Sy Ans. (a) x Sy


  18. (Give answer: (a) If x < y (b) x > y (c) ifXS y (d) if12 y (e) if x = y or no relationship between x and y can be established 17. I. (x)2-256 Or, x= 1256 or, x= 16 11. y=1256 Or, y = 16 16 +16 Therefore, x Therefore, x Sy Ans. (c) xy