# Help with irrational numbers, please?

• Jul 14th 2008, 07:44 AM
Laura901
3 square root of 50 plus 6 square root of 18?
• Jul 14th 2008, 07:47 AM
janvdl
Quote:

Originally Posted by Laura901
3 square root of 50 plus 6 square root of 18?

$3 \sqrt{50} + 6 \sqrt{18}$

$= (3 \times 5) \sqrt{2} + (6 \times 3) \sqrt{2}$

$= 15 \sqrt{2} + 18 \sqrt{2}$

$= 33 \sqrt{2}$
• Jul 14th 2008, 08:00 AM
Laura901
Quote:

Originally Posted by janvdl
$3 \sqrt{50} + 6 \sqrt{18}$

Quote:

Originally Posted by janvdl

$= (3 \times 5) \sqrt{2} + (6 \times 3) \sqrt{2}$

$= 15 \sqrt{2} + 18 \sqrt{2}$

$= 33 \sqrt{2}$

Thank you!