Question

Divide 12x3 − 16x2 − 4x by −4x.

−3x2 + 4x − 1
−3x2 + 4x + 1
−3x3 − 4x2 − x
−3x2 + 4x

Answer 1

`-3x^2+4x+1`

Explanation:

`=(4x\left(3x^2-4x-1\right))/(-4x)`

`=(x\left(3x^2-4x-1\right))/(-x)`

`\mathrm{Apply\:the\:fraction\:rule}:\quad (a)/(-1)=-a`

`=-\left(3x^2-4x-1\right)`

`Simplify`

`=-\left(3x^2-4x-1\right)`

hope this helps :P

Answer 2

-3x2+4x+1

Explanation:

assuming the numbers after x are squares, cubes etc. 12x3 -16x2 -4x all need to be divided by -4x. 12x3/-4x(12/4 and to divided x cubed by x, -1 to the exponent) =-3x2. -16x2/-4x(-16/-4 and to divide x squared by x, -1 to the exponent)=4x. -4x/-4x(anything divided by itself is 1) therefore you have -3x2+4x+1