Odpowiedzi

2009-11-12T21:16:23+01:00
A) (√3+1)(2√3-2) = 2*3 - 2√3 + 2√3 - 2 = 4
b) (√2+√3)(√6+√3) = √12 +√6 + √18 + 3 = 3 + 2√3 +√6 + 3√2
c) (x√2+1)(x-2√2) = √2x² - 2*2x + x - 2√2 = √2x² - 3x -2√2
d) (x+√2)(2√2+x) = 2√2x+x²+4+√2x = x² + 3√2x +4