Question

If if -5 is a root of quadratic equation 2 x square + px minus 15 = 20 and the quadratic equation x square + x k equals to zero has equal roots find the value of k

Answer 1

HERE IS YOUR ANSWER

x^2 + k x = 0

equal roots

b^2 - 4 ac = 0

k^2 - 4 =0

k^2 = 4

k = root 4

k = 2

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