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Vijendra Kumar Gupta

Electronics engineer from NIT, JAIPUR. mathematics lover and love to share knowledge.

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Rahul Anand

a year ago

thanks jatin sir,we know that time is luxury nowadays,so you should only create DNA in only language only,for that create vote pool on facebook to choose hindi or english,OR do DNAs in hinglish

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Atul bansal

a year ago

Good explanation

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Neelam Jain

a year ago

bhut accha h

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4a QUADRATIC EQUATION By Vijendra Kumar Gupta

Topics covered Introduction of Quadratic Equation Relationship B/W zeros & coefficient Solving a quadratic equation By factorization By completing the square Bt quadratic formula or Sridharacharya formula e Nature of roots Previous year problems

Sclution of fa cto isation completing tau S7u e eM mula

2 2. 2

Solve for x : 9x+2-6 x 3x+1+1- 0 We have 9x42-6 3x+1+1=0 Let 3*-y, then equation (i) becomes 81%-9y-9y + 1-0 (By _ 1 ) (By-1)=0 ory- 9 Putting y 3* in (ii), we get 3x 3-2 x =-2 and-2 9

Find the value of /2+12+\2+ Find the value of y2+\2+. Let x =12+ 2+12+ x=-/2 + x by squaring on both sides ,00 X-1, 2

Complet 2 3 6 2 25 2 3 6

[ii) quadratic formula