Radical Expression

**evilexe** · April 28th 2010, 04:57 PM

Hey guys, I got this problem on my math sheet and I have no idea if I did it right because it's the first time I see something with a division and two multiplications.

Thanks,
EE

**skeeter** · April 28th 2010, 05:13 PM

$\frac{a}{b} \div \frac{c}{d} \ne \frac{b}{a} \times \frac{c}{d}<br />$

$\frac{a}{b} \div \frac{c}{d} = \frac{a}{b} \times \frac{d}{c}<br />$

**evilexe** · April 28th 2010, 05:51 PM

That's what I thought after I finished.. Thanks

**evilexe** · April 28th 2010, 05:53 PM

Do I have to flip the last two? Or just the middle one? I am now confused

**skeeter** · April 28th 2010, 06:37 PM

Originally Posted by evilexe

Do I have to flip the last two? Or just the middle one? I am now confused

you only "flip" for division ... just the middle one.

**evilexe** · April 29th 2010, 05:46 PM

Hey, thanks for the reply. I did that yesterday and I think I got it right.

**shenanigans87** · April 29th 2010, 06:21 PM

The answer you put is incorrect. It is the reciprocal of that.

[Math]\frac{(2w-3)(2w+3)^2}{6}[/tex]

You can test any simplification or expansion/contraction problem by assigning the variable an arbitrary value, then solve for the original equation and then your result.

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