Question

\(\frac{1}{2}\sqrt{48}-2\sqrt{75}-\frac{\sqrt{33}}{\sqrt{11}}+5\sqrt{\frac{4}{3}}\)

\(\frac{1-a\sqrt{a}}{1-\sqrt{a}}\)

rut gon help me

ai nhanh minh tick

Answer 1

\(\frac{1}{2}\sqrt{48}-2\sqrt{75}-\frac{\sqrt{33}}{\sqrt{11}}+5\sqrt{\frac{4}{3}}\)

\(=2\sqrt{3}-10\sqrt{3}-\sqrt{3}+\frac{10\sqrt{3}}{3}\)

\(=-9\sqrt{3}+\frac{10\sqrt{3}}{3}\)

\(=\frac{-27\sqrt{3}}{3}+\frac{10\sqrt{3}}{3}\)

\(=\frac{-17\sqrt{3}}{3}\)

\(\frac{1-a\sqrt{a}}{1-\sqrt{a}}\) \(=\frac{1^3-\left(\sqrt{a}\right)^3}{1-\sqrt{a}}\)

                            \(=\frac{\left(1-\sqrt{a}\right)\left(a+\sqrt{a}+1\right)}{1-\sqrt{a}}\)

                            \(=a+\sqrt{a}+1\)

chúc bn học tốt

Answer 2

\(\frac{1-a\sqrt{a}}{1-\sqrt{a}}\)

\(=\frac{\left(1-\sqrt{a}\right)\left(a+\sqrt{a}+1\right)}{1-\sqrt{a}}\)

\(=a+\sqrt{a}+1\)