(b) (4x - 1)(x + 2) = 2 + 7 x
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(4x-1)(x+2)=2+7x
4x^2+8x-x-2=2+7x
4x^2 +7x-2=2+7x
4x^2 -4 =0
4(x^2 -1) =0
so x = o and x = 1 thanks follow me
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