Question

Find the product of (√2 + √5) (√7 - √5)

PLs help( a guy answered to this image (linked below) said I have to find that to find the answer) pls solve for me! THx :))))

Answer 1

`(\sqrt 2 + \sqrt 5)(\sqrt 7 - \sqrt 5) = √(14) - √(10) +√(35) - 5`

Explanation:

Given

`(\sqrt 2 + \sqrt 5)(\sqrt 7 - \sqrt 5)`

Required

Solve

We have:

`(\sqrt 2 + \sqrt 5)(\sqrt 7 - \sqrt 5)`

Open bracket

`(\sqrt 2 + \sqrt 5)(\sqrt 7 - \sqrt 5) = √(2*7) - √(2*5) +√(5*7) - √(5* 5)`

`(\sqrt 2 + \sqrt 5)(\sqrt 7 - \sqrt 5) = √(14) - √(10) +√(35) - 5`