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Mathematics 17 Online
OpenStudy (marigirl):

Simplifying Surds: Can someone help me out with the 4th line denominator.. i have attached a picture

OpenStudy (marigirl):

OpenStudy (lgbasallote):

so what's the problem?

OpenStudy (marigirl):

i think i got it. the line where i have put a blue arrow

OpenStudy (lgbasallote):

you were asking why it was 4 x 2?

OpenStudy (marigirl):

does it work out to be 1?

OpenStudy (lgbasallote):

yup

OpenStudy (lgbasallote):

it becomes 9 - 8 = 1

OpenStudy (marigirl):

omggg its a 4 times 2... i was like why is there a 'x' and where did x come from.. it looks like the letter x!!

OpenStudy (marigirl):

hahah thanks!

OpenStudy (lgbasallote):

haha welcome ^_^

OpenStudy (anonymous):

yeah good work

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