Q64: olve. Check for extraneous solutions.<br>- <span
Q65: <span class="ql-formula" data-value="\mathrm{i}^{3}=-\mathrm{i}"><span class="katex"><span class="katex-mathml"><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><msup><mi mathvariant="normal">i</mi><mn>3</mn></msup><mo>=</mo><mo>−</mo><mi
Q66: Solve. Check for extraneous solutions.<br>- <span
Q67: Rationalize the denominator and simplify.<br>- <span
Q68: Simplify by rationalizing the denominator. Write
Q70: If <span class="ql-formula" data-value="a>0"><span class="katex"><span
Q71: Multiply<br>- <span class="ql-formula" data-value="(7+\sqrt{3})^{2}"><span class="katex"><span class="katex-mathml"><math
Q72: <span class="ql-formula" data-value="\mathrm{i}^{7}"><span class="katex"><span class="katex-mathml"><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><msup><mi mathvariant="normal">i</mi><mn>7</mn></msup></mrow><annotation
Q73: The radius of a sphere depends
Q74: A ssume all variables