Question

if the value of the polynomial m3+2m+a is 12 for m=2, then find the value of a​

Answer 1

A= 2

Explaination:

Put m=2 in m3+2m+a=12

2*3 + 2*2 + a = 12

6 + 4 + a = 12

10 + a = 12

a = 12 - 10

a = 2