Question

if hcf of (x2+x-12) and (2x2-kx-9) is (x-k) then find the value of k

Answer 1

x-k is the hcf
ie x-k=0
x=k
xsq +x-12=2x sq -kx-9
ksq +k-12=2ksq -k sq -9
k sq +k-12=k sq -9
k-12=-9
k=3ans

Answer 2

Answer:

k-12=-9 that means the answer is 3