How do you simplify 4/sqrt5?
1 Answer
Jan 9, 2017
Explanation:
We require to
color(blue)"rationalise the denominator" To do this, multiply the numerator and denominator by
sqrt5
"Since " sqrt5xxsqrt5=5" a rational number"
rArr4/sqrt5=4/sqrt5xxsqrt5/sqrt5=(4sqrt5)/5=4/5sqrt5
