Question

Efectúa
a) (3√2+2)²
b) (√5-2√3)(√5+2√3)
c) (2√5-√3)²

Answer 1

a) (3√2+2)² = (3√2)^2+ 2(3√2)(2)+2^2 = 18+12√2+4 = 22+12√2


b) (√5-2√3)(√5+2√3) = (√5)^2-(2√3)^2 = 5-4×3 = -7


c) (2√5-√3)² = (2√5)^2 - 2(2√5)(√3) + (√3)^2 = 20 - 4√15 + 3 = 23 - 4√15