Evaluate
15a^{2}-\frac{70a}{3}+4
Factor
15\left(a-\left(-\frac{\sqrt{685}}{45}+\frac{7}{9}\right)\right)\left(a-\left(\frac{\sqrt{685}}{45}+\frac{7}{9}\right)\right)
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15a^{2}-\frac{70}{3}a+4
Combine -26a and \frac{8}{3}a to get -\frac{70}{3}a.
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