Question

Rút gọn các biểu thức sau:

A = \(\dfrac{3}{2\left(2x-1\right)}\sqrt{8\left(4x^2-2x+1\right)x^4}\)

B = \(\dfrac{a-b}{b^2}\sqrt{\dfrac{a^2b^4}{a^2-2ab+b^2}}\)

Answer 1

\(A=\dfrac{3}{2\left(2x-1\right)}\cdot x^2\left|2x-1\right|\cdot2\sqrt{2}\)

\(=\pm3\sqrt{2}x^2\)

\(B=\dfrac{a-b}{b^2}\cdot\dfrac{b^2\cdot\left|a\right|}{\left|a-b\right|}\)

\(=\pm\left|a\right|\)