Q81: Factor completely.<br>- <span class="ql-formula" data-value="49 x^{2}-56
Q82: Determine whether the following is a
Q83: Factor completely.<br>- <span class="ql-formula" data-value="x^{2}+3 x
Q84: Factor.<br>- <span class="ql-formula" data-value="x^{2}+2 x y-15
Q85: Factor.<br>- <span class="ql-formula" data-value="25 z^{4}-5 z^{2}-12"><span
Q87: Factor completely.<br>- <span class="ql-formula" data-value="36 \mathrm{x}^{2}-49"><span
Q88: Factor completely.<br>- <span class="ql-formula" data-value="(m+n)(x+2)+(m+n)(y+3)"><span class="katex"><span
Q89: Solve the problem.<br>-The height of a
Q90: Factor.<br>- <span class="ql-formula" data-value="\frac{5}{3} \mathrm{x}^{11}-\frac{4}{3} \mathrm{x}^{10}+\frac{5}{3}
Q91: Factor completely.<br>- <span class="ql-formula" data-value="2 x^{3}+4