What is 3x^3-x^2\times (-2)x ?

The solution to 3x^3-x^2\times (-2)x is 5x^3

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simplify 3x^3-x^2\times (-2)x

simplify

3 x^{3} - x^{2} \cdot (- 2) x

5 x^{3}

Solution steps

3 x^{3} - x^{2} (- 2) x

Simplify

x^{2} (- 2) x : - 2 x^{3}

= 3 x^{3} - (- 2 x^{3})

Apply rule:

a - (- b) = a + b

3 x^{3} - (- 2 x^{3}) = 3 x^{3} + 2 x^{3}

= 3 x^{3} + 2 x^{3}

Add similar elements:

3 x^{3} + 2 x^{3} = 5 x^{3}

= 5 x^{3}

6 \frac{1}{4} - 3 \frac{5}{8}

35 + 45 x

(2 x + 5) (x + 6)

(- 2 m - 3 n)^{3}