Evaluate
x^{2}+26x+51\sqrt{2}
Differentiate w.r.t. x
2\left(x+13\right)
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x^{2}+26x+17\times 3\sqrt{2}
Factor 18=3^{2}\times 2. Rewrite the square root of the product \sqrt{3^{2}\times 2} as the product of square roots \sqrt{3^{2}}\sqrt{2}. Take the square root of 3^{2}.
x^{2}+26x+51\sqrt{2}
Multiply 17 and 3 to get 51.
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