Question

Efetue as multiplicações a) √18+2√50=
b) ⁴√2.⁴√8=

Answer 1

a) √18 + 2√50
= √9•2 + 2√2•25
= √3²•2 + 2√2•5²
= 3√2 + 2•5√2
= 3√2 + 10√2
= (3+10)√2
= 13√2


b) ⁴√2 • ⁴√8
= ⁴√2 •8
= ⁴√16
= ⁴√2⁴
= 2

ou

=⁴√2 • ⁴√8
=⁴√2 • ⁴√2³
=2¼ • 2¾
=2¼+¾
=2^1+3/4
=2⁴÷⁴
=2¹
=2