Question

Find -a2 - 3b3 + c2 + 2b3 - c2 if a = 3, b = 2, and c = -3.

-67

-17

-31

1

Answer 1

sub in the values of a,b and c into the equation

-(3)^2 - 3(2)^3 + (-3)^2 +2(2)^3 (simplify)
= -(9) - 3(8) + (9) + 2(8)
= -9 - 24 + 9 + 16
= -8

Answer 2

if this answer is wrong, you didn't put correct brackets in your equation so i can't tell if the exponents apply to the number or the negative signs too