factorise the following 28 - 31 X - 5 x square
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1
Answer:
the answer is X = 4/5 or X = -7
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Answer:
28-31x-5x^2
=-5x^2 - 31x+ 28
=-5x^2+4x-35x+28
=-x(5x-4)-7(5x-4)
=-(5x-4)(x+7)
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