2√2-√2(√2+2) (-√(-2)²)³÷2=2√2-(2+√2) (-√4)³÷2=2√2+(2+√2) (2)³÷2=2√2+(2+√2) (2)²=2√2+(2+√2) (4)=2√2+8+4√2=8+6√2
2√2-√2(√2+2) =2√2-2√2-2=-2 (-√(-2)²)³÷2=(-2)³÷2=-8÷2=-4