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. Find the roots of the quadratic equation 2x2+x-4=0 by the method of completing the square.

Posted by Sahil Rza 5 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Spoorti Shrinivas 5 years, 1 month ago

2x^2 + x - 4 = 0 x = -b +\- √b^2 - 4ac _____________________ 2a x = -1 +\- √1^2 - 4*2*4 ____________________ 2*2 x = -1 +\- √1-32 _______________ 4 x = -1 +\- √31 ___________ 4 Therefore : x = -1 + √31 x= -1 - √31 _________ ________ 4 4

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Posted by Hari Anand 5 months, 1 week ago

CBSE > Class 10 > Mathematics

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Don't post personal information, mobile numbers and other details.
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Posted by Kanika . 4 days, 12 hours ago

CBSE > Class 10 > Mathematics