Question

SIMPLIFIQUE AS EXPRESSÕES:

Answer 1

A) $\sqrt{x^2-2x+1} = \sqrt{(x-1)^2} =|x-1|$

B) $\sqrt{x^2+2xy+y^2} = \sqrt{(x+y)^2} =|x+y|$

C) $\frac{ \sqrt{x^2-4x+4} }{x^2-4} = \frac{ \sqrt{(x-2)^2} }{(x+2)(x-2)}= \frac{|x-2|}{x^2-4}$