Question

What should be value of a if the value of 5y2+2y -a is-3 for y= -3​

Answer 1

Step-by-step explanation:

5y² + 2y - a = -3 [y= -3]

5(-3)² + 2(-3) - a = -3

5(9) +2(-3) - a = -3

45 - 6 - a = -3

39 - a = -3

- a = -3 - 39

- a = - 42

a = 42