## Algebra 2 (1st Edition)

$$a=4,\:a=\frac{2}{7}$$
Solving the equation using the quadratic formula, we obtain: $$a_{1,\:2}=\frac{-\left(-30\right)\pm \sqrt{\left(-30\right)^2-4\cdot \:7\cdot \:8}}{2\cdot \:7} \\ a=4,\:a=\frac{2}{7}$$
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