Pré-álgebra Exemplos

$3 x^{2} + 2 x - 5$ e $- 4 + 7 x^{2}$

Etapa 1

Some as expressões.

$3 x^{2} + 2 x - 5 - 4 + 7 x^{2}$

Etapa 2

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

$10 x^{2} + 2 x - 5 - 4$

Etapa 3

Subtraia $4$ de $- 5$ .

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

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