Q84: Tell whether or not the number
Q85: Perform the division.<br>- <span class="ql-formula" data-value="\frac{-8
Q86: Perform the division.<br>- <span class="ql-formula" data-value="\frac{x^{4}+7
Q87: Multiply.<br>- <span class="ql-formula" data-value="5(4 \mathrm{x})"><span class="katex"><span
Q88: Simplify.<br>- <span class="ql-formula" data-value="\left(\frac{4}{x}\right)^{3}"><span class="katex"><span class="katex-mathml"><math
Q90: Divide and simplify.<br>- <span class="ql-formula" data-value="\frac{t^{-2}}{t^{-7}}"><span
Q91: Collect like terms and then arrange
Q92: Multiply.<br>- <span class="ql-formula" data-value="-3 x^{8}\left(-10 x^{9}+9
Q93: Multiply.<br>- <span class="ql-formula" data-value="\left(x^{2}+5\right)^{2}"><span class="katex"><span class="katex-mathml"><math
Q94: Subtract.<br>-<img src="https://d2lvgg3v3hfg70.cloudfront.net/TB9836/.jpg" alt=" Subtract. -