factorise it. 15x²-8x-63
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15x²-8x-63
=> 15x²-35x+27x-63
=> 5x(3x-7)+9(3x-7)
=> (3x-7)(5x+9)
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Answered by
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Answer:
To Factorise 15x² - 8x - 63
factorising it by middle term split
In this
We have to find two numbers that Product and Sum will be equal to 63.
So ,
15x² - 35x + 27x - 63
Taking common
5x(3x - 7) + 9(3x - 7)
= (3x - 7) (5x + 9)
So , (3x - 7) (5x + 9) is the factorisation of
15x² - 8x - 63
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