Q217: Write the number in scientific notation.<br>-
Q218: Evaluate the polynomial.<br>- <span class="ql-formula" data-value="x^{2}+3
Q219: Multiply mentally.<br>- <span class="ql-formula" data-value="\left(3 x^{2}-\frac{3}{5}\right)\left(3
Q220: Solve the problem. Express the answer
Q221: Multiply mentally.<br>- <span class="ql-formula" data-value="\left(6 x^{4}-5\right)^{2}"><span
Q223: Simplify.<br>- <span class="ql-formula" data-value="\left(\frac{b^{5}}{2}\right)^{-2}"><span class="katex"><span class="katex-mathml"><math
Q224: Evaluate the polynomial.<br>- <span class="ql-formula" data-value="x^{2}-4
Q225: Divide.<br>- <span class="ql-formula" data-value="\frac{20 x^{8}+60 x^{2}+50
Q226: Multiply.<br>- <span class="ql-formula" data-value="(4 \mathrm{x}-11)(4 \mathrm{x}-11)"><span
Q227: Multiply or divide and write scientific