Question

Rút gọn biểu thức sau:

(√12 - 2√18 + 5√3) x √3+5√6

Answer 1

Ta có: \(\left(\sqrt{12}-2\sqrt{18}+5\sqrt{3}\right)\cdot\sqrt{3}+5\sqrt{6}\)

\(=\left(2\sqrt{3}-6\sqrt{3}+5\sqrt{3}\right)\cdot\sqrt{3}+5\sqrt{6}\)

\(=3+5\sqrt{6}\)