1.
(1+√2)(1-√3)=1-√3+√2-√6
2.
(2√2+3√3)²
=(2√2)²+(3√3)²+2(2√2)(3√3)
=8+27+12√6
3.
(√2+√3)(√2-√3)=(√2)²-(√3)²=2-3=-1
(1+√2)(1-√3)要过程 2.(2√2+3√3)^2要过程 3.(√2+√3)(√2-√3)要过程谢谢
1.
(1+√2)(1-√3)=1-√3+√2-√6
2.
(2√2+3√3)²
=(2√2)²+(3√3)²+2(2√2)(3√3)
=8+27+12√6
3.
(√2+√3)(√2-√3)=(√2)²-(√3)²=2-3=-1