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Find the roots of 2x power …

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Find the roots of 2x power 2 -7x+3=0 quad equation if they exist by the method of completing the square

Posted by Jatin Singh 7 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Soham Deshpande 7 years, 3 months ago

2x^2-7x+3=0 Divide both sides by 2 2x^2/2-7x/2+3/2=0 x^2-7x/2=-3/2 Third term=(1/2×7/2)^2 (7/4)^2=49/16 Adding third term to both sides x^2-7x/2+49/16=-3/2+49/16 (x+7/4)^2=48/32+98/32 (x+7/4)^2=146/32 x+7/4=+or-under root 146/32 x=-7/4+under root 146/32 OR x=-7/4-under root 146/32.

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