1.(-2y-√x)²= 2.(a+2b²)³= 3.(x+√3)²= 4.(-y-√7)²=

1.(-2y - /x)2 = 4y2 - 4y/x + x 2.(a + 2b2)3=a2+ 3a2b2+ 4ab4+ 8b6 3.(x+/3)2=x2 +2x/3+3 4.(-y - /7)2= y2 -2y/7 +7