Question

Efetue as operações com os radicais:

a) 2√3 (√12+√3)
b) (2+√3) (3-√3)
c) (√2+√3) (2-2√3)
d) (2√5+√7) (√5-2√7)

Answer 1

a)
2√3 (√12+√3)
2√3√12+2√3√3
2√36+2√9
2*6+2*3
12+6
18

b)
(2+√3) (3-√3)
6-2√3+3√3-√9
6+√3-3
3+√3

c)
(√2+√3) (2-2√3)
2√2-2√6+2√3-2√9
2√2-2√6+2√3-2*3
2(√2-√6+√3-3)

d)
(2√5+√7) (√5-2√7)
2√25-4√35+√35-2√49
2*5-3√35-2*7
10-3√35-14
-4-3√35