Question

5a2+5a+a+1;a=-2
With explanation please I don’t understand this problem at all

Answer 1

Answer: 9

Explanation:

We need to solve this equation
`5a^(2)` + 5a + a + 1 while a = -2.

Therefore, we have to use direct substitution to substitute -2 for every a in the equation.

`5(-2)^(2)` + 5(-2) + (-2) + 1

5(4) - 10 -2 + 1

20 - 10 - 2 + 1

9