Răspuns
Raspuns - 3(1-2x)\(3-2x)
Explicație pas cu pas:
[(x-2)²-(x+1)²]\3+2x=
(x²-4x+4-x²-2x-1)\(3-2x)=
(3-6x)\(3-2x)=
3(1-2x)\(3-2x)
[(x-1)² - (x+1)²] / (3+2x) = (x-1+x+1)(x-1-x-1) / (3+2x) = 2x·(-2) / (3+2x) =
= -4x/(3+2x)
sau
[(x-1)² - (x+1)²] / 3+2x = (x-1+x+1)(x-1-x-1) / 3+2x = 2x·(-2) / 3 + 2x =
=-4x/3 + ³⁾2x = (-4x+6x)/3 = 2x/3
