Factor
\frac{224\times \left(\frac{3}{4}\right)^{x}+9\sqrt{42}}{168}
Evaluate
\frac{4\times \left(\frac{3}{4}\right)^{x}}{3}+\frac{3\sqrt{42}}{56}
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\frac{4\times \left(\frac{3}{4}\right)^{x-1}+\frac{3\sqrt{42}}{14}}{4}
Factor out \frac{1}{4}.
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