Question

if 4 x square - 12 x + K is a perfect square find the numerical value of k​

Answer 1

Answer:

4x2-12x+k

(a-b)2=a2-2ab+b2

4x2-12x+k=a2-2ab+b2

a=2x

-2ab=-12x

b=3

therefore, k=9 for the eq to be perfect sq

Hope it helps u.