Question

Calcule:
a) √49 + √81
b) √45 + 2√20
c) 2√3 + 7√3
d) 6√2 - 4√2
e) 5-2√2 -3+√2 - 2

PFV GENTE ME AJUDEM

Answer 1

A = 7 + 9 = 16
B = 3 √5 + 2 . 2 √5 = 7 √5
C = 9 √3
D = 2 √2
E = 5 - 3 - 2 + √2 - 2 √2 = - √2