Algebra Examples

$8 - 4 x y^{2}$ for $x = 3$ and $y = - 2$

Step 1

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

$8 - 4 \cdot 3 \cdot y^{2}$

Step 2

Replace the variable $y$ with $- 2$ in the expression.

$8 - 4 \cdot 3 \cdot {(- 2)}^{2}$

Step 3

Simplify each term.

Tap for more steps...

Step 3.1

Multiply $- 4$ by $3$ .

$8 - 12 \cdot {(- 2)}^{2}$

Step 3.2

Raise $- 2$ to the power of $2$ .

$8 - 12 \cdot 4$

Step 3.3

Multiply $- 12$ by $4$ .

$8 - 48$

Step 4

Subtract $48$ from $8$ .

$- 40$