Odpowiedzi

2009-11-13T08:17:35+01:00
1. (3√3-√2)³ – 4(2√2-√3)+2(√3+2√2)²=
=81√3 - 91√2 + 18√3 - 2√2 -8√2 +4√3 +2( 3 + 4√6 +8)=
=103√3 - 91√2 + 6 + +8√2 + 16=
=8√6 + 103√3 - 91√2 + 22

2. (√2+3)(2x-√2)=3√2-5
2x√2 - 2 + 6x - 3√2 = 3√2 - 5 | ()²
8x² - 4 + 36x² - 18 = 18 - 25
44x²=-7+22
44x²=15
x²=15/44
x= √15/44