\(\sqrt{12-6\sqrt{3}}-\)\(\sqrt{7-4\sqrt{3}}=\)\(\sqrt{3^2-2.3.\sqrt{3}+3}-\)\(\sqrt{2^2-2.2.\sqrt{3}+3}\)
\(=\sqrt{\left(3-\sqrt{3}\right)^2}-\)\(\sqrt{\left(2-\sqrt{3}\right)^2}\)
\(=3-\sqrt{3}-\)\(\left(2-\sqrt{3}\right)\)
\(=3-\sqrt{3}-2+\sqrt{3}\)\(=1\)
các bạn ơi giúp mình vs
Rút gon P=\((-3x +5\sqrt(x)-2)/(x+4\sqrt(x)-5) \)
\(\sqrt{12-6\sqrt{3}}-\sqrt{7-4\sqrt{3}}\)
\(=\sqrt{\left(\sqrt{3}-3\right)^2}-\sqrt{\left(\sqrt{3}-2\right)^2}\)
\(=\sqrt{\left(3-\sqrt{3}\right)^2}-\sqrt{\left(2-\sqrt{3}\right)^2}\)
\(=3-\sqrt{3}-2+\sqrt{3}\)
= 1
