Q68: Multiply or divide and write scientific
Q69: Multiply.<br>- <span class="ql-formula" data-value="-8 x(6 x-7)"><span
Q70: Evaluate the polynomial.<br>- <span class="ql-formula" data-value="6-5
Q71: Simplify.<br>- <span class="ql-formula" data-value="-(2 \mathrm{x}-8)"><span class="katex"><span
Q72: Evaluate the polynomial.<br>- <span class="ql-formula" data-value="4
Q74: Multiply.<br>- <span class="ql-formula" data-value="\left(2 y^{2}-4\right)\left(2 y^{2}+4\right)"><span
Q75: Collect like terms.<br>- <span class="ql-formula" data-value="7
Q76: Perform the division.<br>- <span class="ql-formula" data-value="\left(x^{4}-625\right)
Q77: Collect like terms.<br>- <span class="ql-formula" data-value="-7
Q78: Multiply.<br>- <span class="ql-formula" data-value="(\mathrm{x}-4)\left(9 \mathrm{x}^{2}+\mathrm{x}+7\right)"><span class="katex"><span