Answer
$(\sqrt x+5)^3=x\sqrt x+15x+75\sqrt x+125$
Work Step by Step
$(\sqrt x+5)^3=_{3}C_0(\sqrt x)^3(5)^0+_{3}C_1(\sqrt x)^2(5)^1+_{3}C_2(\sqrt x)^1(5)^2+_{3}C_3(\sqrt x)^0(5)^3$
$(\sqrt x+5)^3=x\sqrt x+15x+75\sqrt x+125$
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