Question

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

Answer 1

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Given :
m^3 + 2m + a = 12, where m = 2.

Therefore,
m^3 + 2m + a = 12
2^3 + 2×2 + a = 12
8 + 4 + a = 12
a = 0.


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Answer 2

Hay, Dear friend Given that ☞

m³ + 2m + a = 12

and where the value of m = 2

So,

m³ +2m +a = 12

2³ + 2×2 + a = 12

8 + 4 + a = 12

12 + a = 12

a = 12-12

a = 0

I hope it's help you