Question

If x=-3, what is the value of the expression 2x^(2)-3x^(3) ?

Answer 1

Explanation:

Answer: 99

Plug in -3 into x: 2(-3)^2-3(-3)^3

Follow PEMDAS ; 2(9)-3(-27)

18-(-27) (change signs)

=99

Answer 2

The answer is 99.

Explanation :

Just replace the x in the equation with -3 and calculate.

2(-3)^2 - 3(-3)^3

2 * 9 - 3 * (-27)

2 * 9 + 3 * 27

18 + 81 = 99