Algebra Examples

$3^{2} + - 4^{2}$

Step 1

Replace all occurrences of $+$ $-$ with a single $-$ . A plus sign followed by a minus sign has the same mathematical meaning as a single minus sign because $1 \cdot - 1 = - 1$

$3^{2} - 4^{2}$

Step 2

Simplify each term.

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Step 2.1

Raise $3$ to the power of $2$ .

$9 - 4^{2}$

Step 2.2

Raise $4$ to the power of $2$ .

$9 - 1 \cdot 16$

Step 2.3

Multiply $- 1$ by $16$ .

$9 - 16$

Step 3

Subtract $16$ from $9$ .

$- 7$