Evaluate
4\sqrt{94}+98\approx 136.781438859
Expand
4 \sqrt{94} + 98 = 136.781438859
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\left(\sqrt{94}\right)^{2}+4\sqrt{94}+4
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(\sqrt{94}+2\right)^{2}.
94+4\sqrt{94}+4
The square of \sqrt{94} is 94.
98+4\sqrt{94}
Add 94 and 4 to get 98.
\left(\sqrt{94}\right)^{2}+4\sqrt{94}+4
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(\sqrt{94}+2\right)^{2}.
94+4\sqrt{94}+4
The square of \sqrt{94} is 94.
98+4\sqrt{94}
Add 94 and 4 to get 98.
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