How do you simplify $- 3 x^{2} (x^{2} + 3 x)$ $-3x^2(x^2 + 3x)$ ?

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Answer 1 · 2017-05-01T13:28:55

See the solution process below:

To simplify this expression multiply each term within the parenthesis by the term outside the parenthesis:

$- 3 x^{2} (x^{2} + 3 x) \Rightarrow$ $color(red)(-3x^2)(x^2 + 3x) =>$

$(- 3 x^{2} \cdot x^{2}) + (- 3 x^{2} \cdot 3 x) \Rightarrow$ $(color(red)(-3x^2) * x^2) + (color(red)(-3x^2) * 3x) =>$

$- 3 x^{4} - 9 x^{3}$ $-3x^4 - 9x^3$

How do you simplify −3x2(x2+3x)-3x^2(x^2 + 3x)?