Q283: Subtract.<br>- <span class="ql-formula" data-value="(-5 x+16)-(-15 x+20)"><span
Q284: Convert to decimal notation.<br>- <span class="ql-formula"
Q285: Simplify.<br>- <span class="ql-formula" data-value="\left(x^{-4}\right)^{-4}"><span class="katex"><span class="katex-mathml"><math
Q286: Express using positive exponents. Then simplify.<br>-
Q287: Write the number in scientific notation.<br>-0.000008656<br>A)
Q289: Add.<br>-<img src="https://d2lvgg3v3hfg70.cloudfront.net/TB9836/.jpg" alt=" Add. -
Q290: Multiply.<br>- <span class="ql-formula" data-value="(2 x+7)(x+8)"><span class="katex"><span
Q291: Identify the polynomial as a monomial,
Q292: Simplify.<br>- <span class="ql-formula" data-value="\left(-5 x^{5} y\right)^{4}"><span
Q293: Collect like terms and then arrange