Pré-álgebra Exemplos

$x^{2} + 3 x$ e $- 2 x^{2} + 9 x + 5$

Etapa 1

Some as expressões.

$x^{2} + 3 x - 2 x^{2} + 9 x + 5$

Etapa 2

Subtraia $2 x^{2}$ de $x^{2}$ .

$- x^{2} + 3 x + 9 x + 5$

Etapa 3

Some $3 x$ e $9 x$ .

$- x^{2} + 12 x + 5$

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