<span><u>x^3-x+2</u> =<u> x(x^2-1)+2</u> = <u> x(x^2-1)</u> + <u> 2 </u> = x + <u> 2 </u></span>
x:4-x:3= 2-3
3x/12 - 4x/12= -12/12
3x-4x= -12
-x= -12
x= 12