How do you simplify sqrt(49)/sqrt(500)?

1 Answer
Jan 29, 2016

sqrt(49)/sqrt(500)=7/(10sqrt(5))=(7sqrt(5))/50

Explanation:

We will use the following properties:

  • If a >= 0 then sqrt(a^2) = a

  • If a >=0 or b >=0 then sqrt(ab) = sqrt(a)sqrt(b)

sqrt(49)/sqrt(500) = sqrt(7^2)/sqrt(10^2*5)

=7/(sqrt(10^2)sqrt(5))

=7/(10sqrt(5))

We could finish here, or rationalize the denominator by multiplying the numerator and denominator by sqrt(5) to obtain

7/(10sqrt(5)) = (7sqrt(5))/(10sqrt(5)sqrt(5))

=(7sqrt(5))/(10*5)

=(7sqrt(5))/50