Q255: Multiply mentally.<br>- <span class="ql-formula" data-value="4 x^{2}\left(4
Q256: Multiply.<br>- <span class="ql-formula" data-value="\left(\frac{3}{5}-10 x^{4}\right)\left(\frac{3}{5}+10 x^{4}\right)"><span
Q257: Multiply.<br>- <span class="ql-formula" data-value="(x-0.9)(x+0.9)"><span class="katex"><span class="katex-mathml"><math
Q258: Simplify.<br>- <span class="ql-formula" data-value="\left(\frac{2}{x}\right)^{2}"><span class="katex"><span class="katex-mathml"><math
Q259: Solve the problem.<br>-The average weight
Q261: Find the degree of the polynomial.<br>-
Q262: Identify the polynomial as a monomial,
Q263: Multiply.<br>- <span class="ql-formula" data-value="\left(\mathrm{c}+\frac{5}{9}\right)^{2}"><span class="katex"><span class="katex-mathml"><math
Q264: Evaluate.<br>- <span class="ql-formula" data-value="y^{13}"><span class="katex"><span class="katex-mathml"><math
Q265: Write the polynomial in two ways: