Can someone please help me!

$$3c^2/(c^2-2c) \div c/(c^2-4) $$

Question

Can someone please help me!  

$$3c^2/(c^2-2c) \div c/(c^2-4) $$

tkhunny · Answer

If it were me, I would factor everything that factors and then divide.  Do you remember how to divide these sorts of things?  (Reciprocal and multiply?)

anonymous · Answer

I dont remember anything thats why im in sumemr school :(

anonymous · Answer

(-1/c)(c^3+c^2-4c+8)

anonymous · Answer

if u turn the botom fraction upside down you can multiply accross with a common denominator

anonymous · Answer

So what would the answer be?

anonymous · Answer

i just wrote it above :)

tkhunny · Answer

Well, then you will fail again unless you get your act together.  You WILL have to do better than that.

$c^{2} - 2c = c(c-2)$

This is the Distributive Property.

Please factor $c^{2}-4$.

@groges, please read the Code of Conduct.  Giving answer is not allowed.  Giving bad answers is also discouraged.  For example, there is no concern for common denominators when multiplying.

anonymous · Answer

Oh okay, sorry :)

anonymous · Answer

groges i msg you

anonymous · Answer

none of what you said is in the multiple choice

tkhunny · Answer

@groges  That answer wit c^3 in the denominator is also incorrect.
@Jessicax452 Getting someone else to do your homework is not a successful strategy.

anonymous · Answer

What is it u are asked to do Jessica? Is it to simplify?

anonymous · Answer

yeah

tkhunny · Answer

I'll give you one for free:

$\dfrac{3c^{2}}{c^{2} - 2c} / \dfrac{c}{c^{2} - 4} = \dfrac{3c^{2}}{c^{2} - 2c} \cdot \dfrac{c^{2} - 4}{c}$

This is the Reciprocal and Multiply concept.  Now factor what can be factored

$\dfrac{3c^{2}}{c(c-2)} \cdot \dfrac{(c+2)(c-2)}{c}$

The first one, demonstrated before is the Distributive Property
The second one, you are expected to recognize the "Difference of Squares".

The first fraction has common factor in numerator and denominator

$\dfrac{3c}{c-2} \cdot \dfrac{(c+2)(c-2)}{c}$

Now for some commutative properties

$\dfrac{3c}{c}\cdot\dfrac{c-2}{c-2}\cdot (c+2)$

Some inverse and identity properties now gives $3(c+2)$

You are expected to know ALL of this.  There are more properties, too.  You MUST get good at such manipulations or you will not do well.

Time to get up to speed!

anonymous · Answer

who are you my fuuckin father?