naleelaurore naleelaurore

26-08-2022
Mathematics

contestada

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

Respuesta :

vasnetsovcatherine25 vasnetsovcatherine25

26-08-2022

Answer: 9

Step-by-step explanation:

We need to solve this equation [tex]5a^{2}[/tex] + 5a + a + 1 while a = -2.

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

[tex]5(-2)^{2}[/tex] + 5(-2) + (-2) + 1

5(4) - 10 -2 + 1

20 - 10 - 2 + 1

9

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