Question

how do I solve sqrt8^3+sqrt2x

Answer 1

\[\sqrt{8^{3}}+\sqrt{2x}\]?

Answer 2

That's not an equation, so it cannot be solved. It can be simplified however. Is that what you need?

Answer 3

haha my bad yes

Answer 4

Ok. First, what is 8^3?

Answer 5

22.62

Answer 6

That is not 8^3.

That is 8^(3/2) truncated at two decimal places.

Again, what is 8^3?

Answer 7

2

Answer 8

*Sigh.*
\[8^{3}=8\times8\times8\]What is that equal to?

Answer 9

512

Answer 10

Right.

Now\[\sqrt{512}=\sqrt{2\times 256}=\sqrt{2}\times\sqrt{256}\]What is\[\sqrt{256}\]?

Answer 11

16

Answer 12

Right.

So\[\sqrt{8^{3}}+\sqrt{2x}=16\sqrt{2}+x^{\frac{1}{2}}\sqrt{2}=(16+x^{\frac{1}{2}})\sqrt{2}\]