(1) 2/3√9x+6√x/4-2x√1/x (2) √2x-√8x^3+2√2xy^2 (3)x√1/X+√4Y-√X/2+y√1/Y

问题描述:

(1) 2/3√9x+6√x/4-2x√1/x (2) √2x-√8x^3+2√2xy^2 (3)x√1/X+√4Y-√X/2+y√1/Y

=2/3×3√x+6(√x)/2-2√(x²/x)
=2√x+3√x-2√
=√(2x)-2x√(2x)+2|y|√(2x)
=(1-2x+2|y|)√(2x)
=√(x²/x)+2√y-√x/2+√(y²/y)
=√x+2√y-√x/2+√y
=√x/2+3√y