Question

factorise
k^-2k-120​

Answer 1

Answer:

(k+10)(k-12)

Step-by-step explanation:

k^2-2k-120

=k^2-(12-10)k-120

=k^2-12k+10k-120

=k(k-12)+10(k-12)

=(k+10)(k-12)

Answer 2

Answer:

k=-10,12

Step-by-step explanation:

k²-2k-120

k²+10k-12k-120

k(k+10)-12(k+10)

k-12=0,k+10=0

k=12,k=-10