Question

Can you slove any one question ​

Answer 1

1)
`(√(3)-1 )/(√(3)+1)=((√(3)-1)^(2) )/((√(3)+1)(√(3)-1) )=(4-2√(3) )/(3-1)=(4-2√(3) )/(2)=2-√(3)`

but
`(√(3)-1 )/(√(3)+1 )=a+b√(3)`

=> a = 2

b = -1

2)
`(√(10)-√(15) )/(2√(2) )=(√(20)-√(30) )/(4)=(2√(5)-√(30) )/(4)=-0.251`

Explanation:

Answer 2

Explanation:

I'm not sure how to solve the first one, but I'll try to simplify sqrt3-1/sqrt3+1. I simplified it and I got 2-sqrt3. Does that help?

For question 2, I got -0.251.