Question Find the positive solution of the equation. \[ 8 x^{\frac{7}{4}}+16=38263768 \]
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The Deep Dive
To solve the equation \( 8 x^{\frac{7}{4}} + 16 = 38263768 \), first, we subtract 16 from both sides: \[ 8 x^{\frac{7}{4}} = 38263768 - 16 = 38263752 \] Next, divide both sides by 8: \[ x^{\frac{7}{4}} = \frac{38263752}{8} = 4782969 \] To eliminate the fractional exponent, raise both sides to the power of \( \frac{4}{7} \): \[ x = (4782969)^{\frac{4}{7}} \] Calculating \( (4782969)^{\frac{4}{7}} \) will give the positive solution: Calculating \(4782969\) raised to \( \frac{4}{7} \), First, we find the seventh root of \(4782969\): \[ 7\sqrt{4782969} \approx 17 \quad \text{(since \(17^7 = 4782969\))} \] Now we raise \(17\) to the \(4\)th power: \[ 17^4 = 83521 \] Thus, the positive solution to the equation is: \[ \boxed{83521} \]