Pre-Algebra Examples

Find the sum of $- 8 x^{2} + 3$ and $- 9 x^{2} + 3 x - 3$

Step 1

Write the problem as a mathematical expression.

$- 8 x^{2} + 3 - 9 x^{2} + 3 x - 3$

Step 2

Combine the opposite terms in $- 8 x^{2} + 3 - 9 x^{2} + 3 x - 3$ .

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Step 2.1

Subtract $3$ from $3$ .

$- 8 x^{2} - 9 x^{2} + 3 x + 0$

Step 2.2

Add $- 8 x^{2} - 9 x^{2} + 3 x$ and $0$ .

$- 8 x^{2} - 9 x^{2} + 3 x$

Step 3

Subtract $9 x^{2}$ from $- 8 x^{2}$ .

$- 17 x^{2} + 3 x$