zad.1 Wykonaj mnożenia i zredukuj wyrazy podobne
a) (√3+2)(2√3-3)
b) (2√a - √b)(-√b+2√a)
a) (√3+2)(2√3-3) = 6 + 4√3 - 3√3 - 6 = √3
b) (2√a - √b)(-√b+2√a) = (2√a - √b)(2√a - √b) = (2√a - √b)² = 4a - 4√ab + b =
= 4(a - √ab) + b
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a) (√3+2)(2√3-3) = 6 + 4√3 - 3√3 - 6 = √3
b) (2√a - √b)(-√b+2√a) = (2√a - √b)(2√a - √b) = (2√a - √b)² = 4a - 4√ab + b =
= 4(a - √ab) + b
(