Question

Calcule:
a) √16x+√9x-√36x
b) √8a³+√72a³-√18a³
c) 3x√x²y-2√²+²y+6x²√y
d) 3a√ab³-7b√a³b+ab√4ab
preciso das contas

Answer 1

a) √16x+√9x-√36x =
 = 4√x + 3√x - 6√x =
= √x(4 + 3 -6)=
= √x



b) √8a³+√72a³-√18a³ =
= 2a√2a + 6a√2a - 3√2a =
= (2a + 6a -3a)√2a =
= 5a √2a




c) 3x√x²y-2√²+²y+6x²√y=
= 3x²√y -2x²√y + 6x²√y =
= (3 - 2 + 6) x²√y =
= 7x²√y


d) 3a√ab³-7b√a³b+ab√4ab =
= 3ab√ab- 7ab√ab +2ab√ab =
= (3ab - 7ab + 2ab) √ab =
= - 2ab√ab

Espero ter ajudado, bons estudos. Abraços