Q13: Simplify.<br>- <span class="ql-formula" data-value="-\left(7 x^{2}-4 x+7\right)"><span
Q14: Evaluate.<br>-The volume of a cube with
Q15: Identify the degree of each term
Q16: Simplify.<br>- <span class="ql-formula" data-value="-\left(-6 x^{4}+7 x^{2}+\frac{5}{6}
Q17: Simplify.<br>- <span class="ql-formula" data-value="\left(\frac{x^{8}}{2}\right)^{2}"><span class="katex"><span class="katex-mathml"><math
Q19: Evaluate.<br>- <span class="ql-formula" data-value="x^{2}-9"><span class="katex"><span class="katex-mathml"><math
Q20: Solve the problem. Express the answer
Q21: Find the degree of the polynomial.<br>-
Q22: Multiply or divide and write scientific
Q23: Simplify.<br>- <span class="ql-formula" data-value="-2\left(x^{2} y\right)^{-2}"><span class="katex"><span