Q61: Simplify the complex fraction.<br>- <span class="ql-formula"
Q62: <span class="ql-formula" data-value="\frac{x^{2}+3 x-25}{x-8}+\frac{x^{2}+2 x-17}{8-x}"><span class="katex"><span class="katex-mathml"><math
Q63: <span class="ql-formula" data-value="\frac{x+13}{2 x}-\frac{x-7}{9 x}"><span class="katex"><span class="katex-mathml"><math
Q64: The effective spring constant keff for
Q65: Find the LCD of the given
Q67: Simplify the complex fraction.<br>- <span class="ql-formula"
Q68: Determine whether the two binomials are
Q69: Frank can type a report in
Q70: <span class="ql-formula" data-value="\frac{x+1}{x+6}-\frac{x}{x^{2}-36}=\frac{x-3}{x-6}"><span class="katex"><span class="katex-mathml"><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mfrac><mrow><mi>x</mi><mo>+</mo><mn>1</mn></mrow><mrow><mi>x</mi><mo>+</mo><mn>6</mn></mrow></mfrac><mo>−</mo><mfrac><mi>x</mi><mrow><msup><mi>x</mi><mn>2</mn></msup><mo>−</mo><mn>36</mn></mrow></mfrac><mo>=</mo><mfrac><mrow><mi>x</mi><mo>−</mo><mn>3</mn></mrow><mrow><mi>x</mi><mo>−</mo><mn>6</mn></mrow></mfrac></mrow><annotation encoding="application/x-tex">\frac{x+1}{x+6}-\frac{x}{x^{2}-36}=\frac{x-3}{x-6}</annotation></semantics></math></span><span
Q71: <span class="ql-formula" data-value="\frac{4 \mathrm{x}-1}{\mathrm{x}^{2}+9 \mathrm{x}+8}-\frac{\mathrm{x}-2}{\mathrm{x}^{2}-1}"><span class="katex"><span class="katex-mathml"><math