Álgebra Exemplos

$7 x^{2} - 2 x + 9 + (3 x^{2} + 15 x - 4)$

Etapa 1

Remova os parênteses.

$7 x^{2} - 2 x + 9 + 3 x^{2} + 15 x - 4$

Etapa 2

Some $7 x^{2}$ e $3 x^{2}$ .

$10 x^{2} - 2 x + 9 + 15 x - 4$

Etapa 3

Some $- 2 x$ e $15 x$ .

$10 x^{2} + 13 x + 9 - 4$

Etapa 4

Subtraia $4$ de $9$ .

$10 x^{2} + 13 x + 5$

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$