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b) W(x)=2x³+x²-8x-4=x²(2x-1)-4(2x+1)=(2x+1(x²-4)=(2x+1(x-2)(x+2)
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b) W(x)=2x³+x²-8x-4 = x²(2x+1)-4(2x+1) = (2x+1)(x²-4)(2x+1)(x+2)(x-2)
b) W(x)=2x³+x²-8x-4 = x²(2x+1) - 4(2x+1) = (2x+1)(x²-4) = (2x+1)(x-2)(x+2)