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If one root of the quadratic …

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If one root of the quadratic equation X ^2 + 7 x + 12 is -4 then the other root is given by

Posted by Tanisha Shakya 1 year, 9 months ago

CBSE > Class 10 > Mathematics

3 answers

Ashlesha Sohani 1 year, 9 months ago

Nice question Answer of this question is -3 you can solve this using relationship between zeroes and coefficients of a polynomial We know, a+b (alpha + beta) = -B/A ab(alpha ×beta) = C/A Therefore in the quadratic equation x^2+7x+12 -4 + b = -7/1 b=-3 And to verify -4×b = 12/1 b= 12/-4 b= -3 Hope you got it ☺️

Harman Joiya 1 year, 9 months ago

Joiya

Aryan Indani 1 year, 9 months ago

Answer is -3 as a'+b= -b/a here we have the value of a' ie. One zero and also the value of b and a hence by solving u will get answer

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