Question

Can anyone answer this? Last question or at least guide me through.

3 square root of 45 x cubed end root plus 2 square root of 12 end root plus square root of 27 end root minus 3 square root of 20 x cubed

3 x square root of 5 x end root plus 7 square root of 3

3 x square root of 10 x end root plus 7 square root of 6

10 x square root of 8 x

40 x square root of x

Answer 1

Let me try to re-write it first...

Answer 2

Sounds good!

Answer 3

\[3\sqrt{45 x^3} + 2\sqrt{12} + \sqrt{27} - 3\sqrt{20x^3}\]

Answer 4

Is that correct?

Answer 5

If that problem is written correctly, your calculations are a bit off.
Factor everything under each of the square roots.

Answer 6

Sorry im back and yes thats right

Answer 7

Just to get your started:
\[3 \sqrt{45x^3} = 3 * \sqrt{9} * \sqrt{5} * \sqrt{x^2} * \sqrt{x}\]
9 and \(x^2\) are perfect squares to take the square root and multiply those by the coefficient.
\[3 * 3 * x * \sqrt{5} * \sqrt{x}\]
Then combine:
\[9x\sqrt{5x}\]

Answer 8

Do the same with the other terms.

Answer 9

OK thanks i get back to you in a few

Answer 10

I'll be around.... :-)