Pra-Aljabar Contoh

(7 x^{2} - 5 x) + (2 x^{2} - x)

$(7 x^{2} - 5 x) + (2 x^{2} - x)$

Langkah 1

Hilangkan tanda kurung.

7 x^{2} - 5 x + 2 x^{2} - x

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

Langkah 2

Tambahkan

7 x^{2}

$7 x^{2}$ dan

2 x^{2}

$2 x^{2}$ .

9 x^{2} - 5 x - x

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

Langkah 3

Kurangi

x

$x$ dengan

- 5 x

$- 5 x$ .

9 x^{2} - 6 x

$9 x^{2} - 6 x$

$(7 x^{2} - 5 x) + (2 x^{2} - x)$

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⎡ ⎢ ⎣ \begin{matrix} x^{2} & \frac{1}{2} \sqrt{π} & \int x d x \end{matrix} ⎤ ⎥ ⎦

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