Solve. Try factoring first. If factoring is not possible or is difficult, use the quadratic formula.
-$\frac{1}{\mathrm{x}}+\frac{1}{\mathrm{x}+3}=\frac{1}{1}$
A) $\frac{-1 \pm \sqrt{21}}{2}$
B) $\frac{-5 \pm \sqrt{21}}{2}$
C) $\frac{5 \pm \sqrt{21}}{2}$
D) $\frac{1 \pm \sqrt{21}}{2}$

Question

Quizplus · Accepted Answer

The correct answer is A because the quadratic formula gives $\frac{-1 \pm \sqrt{21}}{2}$.

Solve Try Factoring First 1x+1x+3=11\frac{1}{\mathrm{x}}+\frac{1}{\mathrm{x}+3}=\frac{1}{1}x1​+x+31​=11​ A) −1±212\frac{-1 \pm \sqrt{21}}{2}2−1±21​​ B) −5±212\frac{-5 \pm \sqrt{21}}{2}2−5±21​​

Solve Try Factoring First $\frac{1}{\mathrm{x}}+\frac{1}{\mathrm{x}+3}=\frac{1}{1}$ A) $\frac{-1 \pm \sqrt{21}}{2}$ B) $\frac{-5 \pm \sqrt{21}}{2}$