Evaluate Using the Given Value x^3-2x+3 if x=-3

$x^{3} - 2 x + 3$ if $x = - 3$

Step 1

Replace the variable $x$ with $- 3$ in the expression.

${(- 3)}^{3} - 2 \cdot - 3 + 3$

Step 2

Simplify each term.

Raise $- 3$ to the power of $3$ .

$- 27 - 2 \cdot - 3 + 3$

Multiply $- 2$ by $- 3$ .

$- 27 + 6 + 3$

Step 3

Simplify by adding numbers.

Add $- 27$ and $6$ .

$- 21 + 3$

Add $- 21$ and $3$ .

$- 18$