Question

What should be the value of b if the value of
5x - 2x^(2) + b is-3 when x = -1?​

Answer 1

Answer:

5x-2x²+b = -3

5×(-1)-2×(-1)×(-1)+b=-3

-5-2 +b =-3

-7+b =-3

b =-3+7

b =4