Question

Work out

√18 - 28/√50
Give your answer in the form
√a/b
where a and b are integers.

Answer 1

I’m pretty sure the answer this this question is: 5sqrt(18) - 14/25.

Answer 2

Answer: a=2 b=5

Explanation:

`√(18) - (28)/(√(50) )`

=
`√(9*2) - (28)/(√(25*2) )` simplify roots

=
`3√(2) - (28)/( 5\sqrt2)` bring root to top by multiplying by
`(√(2) )/(√(2) )`

=
`3√(2) - (28√(2) )/( 10)` combine with common denominator

=
`(30√(2)-28√(2) )/(10)` combine like terms on top

=
`(2√(2) )/(10)` reduce

=
`(√(2) )/(5)`

a=2 b=5