(8x^3-4x+1)÷(x-1/2)
n° 462
$\dfrac{8x^3-4x+1}{x-\frac{1}{2}}=$
$= \dfrac{\cancel{(2x-1)}(4x^2+2x-1)}{\frac{1}{2}\cancel{(2x-1)}}=$
$= \dfrac{4x^2+2x-1}{\frac{1}{2}}=$
$= 2(4x^2+2x-1)=$
$= 8x^2+4x-2$
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