Question

Exponents and logarithms and radical numbers...sooo simplify the expression nr.2

Answer 1

\[2\sqrt{8}+\sqrt{200}-4\sqrt{18}\]

Answer 2

The only way you can simplify is after you simplify the radicals.

Answer 3

\[
2\sqrt{8}=2\sqrt{2\cdot 2\cdot 2}=2\cdot 2\sqrt{2}=4\sqrt{2}
\]

Answer 4

\[
\sqrt{200} = \sqrt{2\cdot 2\cdot 2\cdot 5\cdot 5}=5\cdot 2\sqrt{2}=10\sqrt{2}
\]

Answer 5

Now you need to do the same with \[
4\sqrt{18}
\]But do it yourself this time for practice.

Answer 6

yeah I got the same thing,but I don't know how to do with \[4\sqrt{18}\] should it be
\[4\sqrt{9}\times \sqrt{2}\]? and soo? @wio

Answer 7

Okay what is the prime factorization of \(18\)?

Answer 8

Oh wait, what you have is fine, but you need to change \(\sqrt{9}=\sqrt{3\cdot 3}=3\)

Answer 9

ohh thanks that's why I got the wrong answer hehe ^^