Question

Simplificar as expressões:

a) (3√5 -2√2) * (2√5 -√2)

b) 5√3 * (2√2 -√72) + 4√6
e

Answer 1

a) (3√5-2√2) * (2√5-√2) =

= 3√5*2√5-3√5*√2-2√2*2√5+2√2*√2 =

= 6*5 - 3√5√2-4√2√5 +2*2 =

=30 -7√5√2 + 4 = 34 - 7√10

b) 5√3*(2√2-√72)+4√6

= 5√3*(2√2-6√2)+4√6 =

= 10√6-60√6+4√6 = -16√6