Question

2x³-14x+k by x+3

ans is 12 show how

Answer 1

Answer:

Step-by-step explanation:

f(x)=2x^3-14x+k

g(x)=x+3

f(-3)=2×(-3)^3-14×-3+k=0

=2×-27+42+k=0

=-54+42+k=0

=-12+k=0

=k=12

Hope it helps