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Is this factor & simplfy problem correct?
5(3-4x)²-8(3-4x)(5x-1)
5(3-4x)(3-4x)-8(3-4x)(5x-1)
5(9-12x-12x+16x²)-8(15x-3-20x²+4x)
45-60x-60x+80x²-120x+24+160x²-32x
45+24-60x-60x-120x-32x+80x²+160x²
69-304x+240x²
1 Answer
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- Anonymous9 years ago
5(3-4x)^2-8(3-4x)(5x-1)
= (3-4x)[5(3-4x)-8(5x-1)]
= (3-4x)(15-20x-40x+8)
= (3-4x)(23-60x)
= 69-180x-92x+240x^2
= 240x^2-272x+69
I factored out (3-4x) first.
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