Evaluate an algebraic expression {ACT}

What is the value of the expression x³ - 2x² + 4x + 4,  for x = -2 ?
A.)  12
B.)  -2
C.)  -4
D.  -8
E.) -20

x³ - 2x² + 4x + 4
= (-2)³ - 2(-2)² + 4(-2) + 4   {substituted -2 in for x}
= -8 - 2(4) - 8 + 4   {evaluated exponents}
= -8 - 8 - 8 + 4   {multiplied}
= -20   {added and subtracted from  left to right}

- Algebra House