Which of the following is the correct simplification of $\frac{z+10}{10}$z+1010?
$\frac{z}{10}+1$z10+1
$z+1$z+1
$z$z
Simplify the following expression, for $x\ne0$x≠0:
$\frac{9x^3+5x^5}{x}$9x3+5x5x
Simplify the following expression, for $x\ne0$x≠0:
$\frac{48x^4+12x^3-30x^2-42x}{6x}$48x4+12x3−30x2−42x6x
The rectangle shown below has an area of $4x^4-8x$4x4−8x square units.
Find a simplified polynomial expression for its length.