rút gọn phân thức 80x^3-125x / 3(x-3)-(x-3)(8-4x)
[tex]\frac{80x^{3}-125x}{3*\left ( x-3 \right )-\left ( x-3 \right )*\left ( 8-4x \right )}[/tex]
[tex]=\frac{5x*\left ( 4x-5 \right )*\left ( 4x+5 \right )}{\left ( x-3 \right )*\left ( 3-8+4x \right )}[/tex]
[tex]=\frac{5x*\left ( 4x-5 \right )*\left ( 4x+5 \right )}{\left ( x-3 \right )*\left ( 4x-5 \right )}[/tex]
[tex]=\frac{5x*\left ( 4x+5 \right )}{x-3}[/tex]