Question 342438
{{{-2x^3-x^2+5x+2}}} Start with the given expression.



{{{-2(-3)^3-(-3)^2+5(-3)+2}}} Plug in {{{x=-3}}}.



{{{-2(-27)-(-3)^2+5(-3)+2}}} Cube {{{-3}}} to get {{{-27}}}.



{{{-2(-27)-9+5(-3)+2}}} Square {{{-3}}} to get {{{9}}}.



{{{54-9+5(-3)+2}}} Multiply {{{-2}}} and {{{-27}}} to get {{{54}}}.



{{{54-9-15+2}}} Multiply {{{5}}} and {{{-3}}} to get {{{-15}}}.



{{{32}}} Combine like terms.



So {{{-2x^3-x^2+5x+2=32}}} when {{{x=-3}}}



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