Algebra Examples

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

Step 1

Replace all occurrences of $-$ $-$ with a single $+$ . Two consecutive minus signs have the same mathematical meaning as a single plus sign because $- 1 \cdot - 1 = 1$

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

Step 2

Add $4 x^{3}$ and $x^{3}$ .

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

Step 3

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

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

Step 4

Add $- 4 x$ and $3 x$ .

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