Question

which number should be multiplied to (√5-√3) to get
a rational number?​

Answer 1

Answer:

we have to multiply by its conjugate

(√5 + √3)

proof: (√5 - √3)(√5 + √3)

= 5 - 3

= 2

[( a - b )(a + b) = a^2 - b^2 ]

Answer 2

We have to multiple it by its conjugate root 5 added to root 3