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

Answer:

$(\sqrt 2 + \sqrt 5)(\sqrt 7 - \sqrt 5) = \sqrt{14} - \sqrt{10} +\sqrt{35} - 5$

Step-by-step explanation:

Given

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

Required

Solve

We have:

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

Open bracket

$(\sqrt 2 + \sqrt 5)(\sqrt 7 - \sqrt 5) = \sqrt{2*7} - \sqrt{2*5} +\sqrt{5*7} - \sqrt{5* 5}$

$(\sqrt 2 + \sqrt 5)(\sqrt 7 - \sqrt 5) = \sqrt{14} - \sqrt{10} +\sqrt{35} - 5$