Question

p(x) = x^2 - kx +9 is 7. find the value of k​

Answer 1

Answer:

k = (2+x^2)/x

Step-by-step explanation

x^2-kx+9=7

therefore, x^2-kx+9-7=0

=> x^2-kx+2=0

=> x^2-kx=-2

=> x(x-k)=-2

=> x-k=-2/x

=> -k=(-2/x)-x

=> -k=-[(2+x^2)/x

=> k=(2+x^2)/x