Question

Racionalize os denominadores ( o simbolo ´´a`` é = √ ) :

a) $\frac{9}{√2}$

b) $\frac{4}{√5}$

c) $\frac{1}{√8}$

d) $\frac{7}{3√12}$

Answer 1

a)

9/√2 * √2/√2

9√2/2

b)

4/√5 * √5/√5

4√5/5

c)

1/√8 * √8/√8

√8/8

2√2/8

√2/4

d)

7/∛12 * ∛12²/∛12² = 7∛144/12