How do you factor by grouping $56 x^{3} - 24 x^{2} + 35 x - 15$ $56x^3 - 24x^2 + 35x - 15$ ?

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How do you factor by grouping $56 x^{3} - 24 x^{2} + 35 x - 15$ $56x^3 - 24x^2 + 35x - 15$ ?

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Answer 1 · 2015-04-11T13:46:13

Try collecting $7 x$ $7x$ between the first and third term and $- 3$ $-3$ between the second and fourth to get:
$7 x (8 x^{2} + 5) - 3 (8 x^{2} + 5)$ $7x(8x^2+5)-3(8x^2+5)$
Now collect $(8 x^{2} + 5)$ $(8x^2+5)$ :
$(8 x^{2} + 5) (7 x - 3)$ $(8x^2+5)(7x-3)$

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How do you factor by grouping $56 x^{3} - 24 x^{2} + 35 x - 15$ $56x^3 - 24x^2 + 35x - 15$ ?

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How do you factor by grouping 56x3−24x2+35x−1556x^3 - 24x^2 + 35x - 15?

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How do you factor by grouping $56 x^{3} - 24 x^{2} + 35 x - 15$ $56x^3 - 24x^2 + 35x - 15$ ?