(9 - 3√x+3√x)/(3-√x)*(3 -√x)²=9(3-√x) = 9 (3 -sqrt(4/81))=9(3-2/9)=9*3 - 2=25.
( 2x-4) )⁾<span> 2 1
y</span>⁾=⁽√( 2x-4) )⁾= --------------------- = --------------- = -------------
2 √( 2x-4) 2 √( 2x-4) √( 2x-4)
y⁾=((x+2)⁴)⁾=4*(x+2)³ *(x+1)⁾= 4*(x+2)³