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प्रश्न
Factorise the following by splitting the middle term:
7x2 + 40x - 12
बेरीज
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उत्तर
7x2 + 40x - 12
= 7x2 + 42x - 2x - 12
= 7x(x + 6) - 2(x + 6)
= (x + 6)(7x - 2).
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