Question

If - 4 is a root equation x^2+px-4=0 and the quadratic equation x^2+px+k=0 has equal roots. Find K ​

Answer 1

Answer:

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Explanation:

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Answer 2

Answer:

k=-4

Explanation:

putting the root in equation

(-4) ^2+p(-4)-4=0

16+-4p-4=0

-4p=-12

p = 12/4

p=3

hence p=3,

therefore, x^2+3x+k will form

Again putting the value of root in the equation

(-4) ^2+3(-4) +k=0

16-12+k=0

k=-4