How do you factor by grouping $x^{3} + 5 x^{2} - 6 x - 30$ $x^3+5x^2-6x-30$ ?

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How do you factor by grouping $x^{3} + 5 x^{2} - 6 x - 30$ $x^3+5x^2-6x-30$ ?

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Answer 1 · 2015-04-11T01:59:10

Collect $x$ $x$ between the first and third term and $5$ $5$ between the second and fourth:
$x (x^{2} - 6) + 5 (x^{2} - 6)$ $x(x^2-6)+5(x^2-6)$
Collect $(x^{2} - 6)$ $(x^2-6)$ to get:
$(x^{2} - 6) (x + 5)$ $(x^2-6)(x+5)$

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How do you factor by grouping $x^{3} + 5 x^{2} - 6 x - 30$ $x^3+5x^2-6x-30$ ?

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How do you factor by grouping x^3+5x^2-6x-30x3+5x2−6x−30x^3+5x^2-6x-30?

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How do you factor by grouping $x^{3} + 5 x^{2} - 6 x - 30$ $x^3+5x^2-6x-30$ ?