factorise -2x²-7x-3
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Step-by-step explanation:
−2x²−7x−3
−1(2x²+7x+3)
−1(2x²+6x+x+3)
−1[2(x+3)+1(x+3)]
−1(2x+1)(x+3)
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Answer:
= 2x² + (6+1) x + 3
= 2x² + 6x + x + 3
= 2x (x + 3) + 1 (x + 3)
= (2x + 1) (x + 3)
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