Question

Find the value of a, if the value of - x2 + 3x - a = 8. when x = -1​

Answer 1

Answer:

a=-6

Step-by-step explanation:

-x2+3x-a=8

-1×-1+3×-1 -a=8

1-3-a=8

-a=8-2

-a=6

a=-6

I hope it's helpful for you.

Answer 2

Answer:

A=-3

Step-by-step explanation:

-x2+3x-a=8

1×2+3-a=8

2+3-a=8

5-a=8

-a=8-5

-a=3

a=-3