-) (4X - 5x² - 7x + 1) = (4x - 1)
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Step-by-step explanation:
-4x ×5x^2+7x-1 = 4x-1
5x^2 +3x-4x-1+1=0
5x^2-x=0
x(5x-1)=0
x=0,x=1/5
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