Question

Simplify 4 Sqrt 2 + 7 Sqrt 2 - 3 Sqrt 2

Answer 1

@perl

Answer 2

8sqrt2

Answer 3

Thank you!

Answer 4

these are quite easy - just treat the radical , as say, x
so we have
4x + 7x - 3x = ?

Answer 5

for x substitute sqrt2

Answer 6

Ok

Answer 7

Can i ask you another one

Answer 8

never mind

Answer 9

the method that @cwrw238 is fairly simple to understand - probably the simplest way of putting it, if you need any help please just ask :)