Question

Racionalize os denominadores abaixo:
A) 2/√10
B)√2/√5
C)20/3√6
D)XY/5√X

Answer 1

a
2V10 / (V10)² = 2V10/10  = 1V10/5
b
V2/V5 = ( V2)V5 / (V5)²  = (V10 / 5)
c
20/(3V6) = 20V6/ 3 (V6)² = (20V6)/ ( 3 * 6) =( 20V6) / 18  = (10V6)/9
d
(xy)/ (5Vx) = (xy)(Vx) / ( 5 ) (Vx)² =( xyVx )( 5 *x) =( yVx)/5