If-one-zero-of-the-quadratic-polynomial-x-2-7x-k-is-2-then-find-the-value-of-k-

Question Number 9792 by Basant007 last updated on 04/Jan/17

If one zero of the quadratic polynomial

x^{2} + 7 x + k is 2 then find the value of k

Answered by RasheedSoomro last updated on 05/Jan/17

If one zero of the quadratic polynomial

x^{2} + 7 x + k is 2 then find the value of k

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2 is one 0 of x^{2} + 7 x + k means 2 is one

solution of x^{2} + 7 x + k = 0

{(2)}^{2} + 7 (2) + k = 0

k = - 18

Commented by Basant007 last updated on 04/Jan/17

- 18 or 18

Commented by prakash jain last updated on 05/Jan/17

18 + k = 0

\Rightarrow k = - 18

Commented by RasheedSoomro last updated on 05/Jan/17

Thanks sir! I have corrected .