Question

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Answer this question ⤵ ⤵


$\bold {Factorise : \: 4x ^{3} \: + \: 69x \: - \: 117}$


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Answer 1

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Here is u r Ans ➡

$= 4x {}^{3} + 69x - 117$

$= 4x {}^{3} - 6x {}^{2} + 6x {}^{2} + 69x - 117$

$= 4x {}^{3} - 6x {}^{2} + 6x {}^{2} - 9x + 78x - 117$

$= 2x {}^{2} \times (2x - 3) + 3x \times (2x - 3) + 39(2x - 3)$

$= (2x - 3) \times (2x {}^{2} + 3x + 39)$
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