$-\left( x+2 \right) \times \left( {x}^{2}-4x+4 \right)$
Simplify the expression$-\left( {x}^{3}-4{x}^{2}+4x+2{x}^{2}-8x+8 \right)$
Collect like terms$-\left( {x}^{3}-2{x}^{2}+4x-8x+8 \right)$
Collect like terms$-\left( {x}^{3}-2{x}^{2}-4x+8 \right)$
When there is a $-$ in front of an expression in parentheses, change the sign of each term of the expression and remove the parentheses$-{x}^{3}+2{x}^{2}+4x-8$