How do you simplify $x^{3} + (5 x^{2} - 6 x - 1) x + 7 x^{2}$ $x^3+(5x^2-6x-1)x+7x^2$ ?

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How do you simplify $x^{3} + (5 x^{2} - 6 x - 1) x + 7 x^{2}$ $x^3+(5x^2-6x-1)x+7x^2$ ?

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Answer 1 · 2018-06-18T10:21:19

$\Rightarrow 6 x^{3} + x^{2} - x$ $color(purple)(=> 6x^3 + x^2 - x$

Explanation:

#x^3 + (5x^2 - 6x - 1)x + 7x^2

$\Rightarrow x^{3} + 5 x^{3} - 6 x^{2} - x + 7 x^{2}, removing bracket$ $=> x^3 + 5x^3 - 6x^2 - x + 7x^2, "removing bracket"$

$\Rightarrow x^{3} + 5 x^{3} + 7 x^{2} - 6 x^{2} - x, bringing like terms together$ $=> x^3 + 5x^3 + 7x^2 - 6x^2 - x, " bringing like terms together"$

$\Rightarrow 6 x^{3} + x^{2} - x$ $color(purple)(=> 6x^3 + x^2 - x$

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How do you simplify $x^{3} + (5 x^{2} - 6 x - 1) x + 7 x^{2}$ $x^3+(5x^2-6x-1)x+7x^2$ ?

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How do you simplify x3+(5x2−6x−1)x+7x2 x^3+(5x^2-6x-1)x+7x^2?

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How do you simplify $x^{3} + (5 x^{2} - 6 x - 1) x + 7 x^{2}$ $x^3+(5x^2-6x-1)x+7x^2$ ?