Hi, I really need help at umm prime factorization....uhh i think its like using exponents, so yeah... 36 , 81 , 65 , 19 , 24 , 18 , 40 , 75 , 27 , 32 , 49 , 25 , 42 , 104 , 55 , and 77

PLEASE HELP IF YOU CAN

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- Sep 10th 2009, 02:56 PMJeffrey6264Please help on 5th grade prime thingy
Hi, I really need help at umm prime factorization....uhh i think its like using exponents, so yeah... 36 , 81 , 65 , 19 , 24 , 18 , 40 , 75 , 27 , 32 , 49 , 25 , 42 , 104 , 55 , and 77

PLEASE HELP IF YOU CAN - Sep 10th 2009, 03:12 PMpickslides
Here's an example, I will keep reducing my factors until they are prime. Once this is done I put them into index form

$\displaystyle 36 = 6\times 6 = (3\times 2)\times (3 \times 2) = 3^2\times 2^2$

Index form works as follows

$\displaystyle a\times a = a^2$

$\displaystyle a\times a \times a = a^3$

$\displaystyle a\times a \times a \times a= a^4$

and so on... - Sep 10th 2009, 03:17 PMJeffrey6264
- Sep 10th 2009, 03:35 PMpickslides
which bit could you follow? do you know the multiplication tables?

- Sep 10th 2009, 03:38 PMJeffrey6264
- Sep 10th 2009, 03:52 PMpickslides
My first post in this thread is doing exactly what you are after, study it.

Here is another example

$\displaystyle 81 = 9\times 9 = (3\times 3) \times (3\times 3) = 3^4$

I made 81 into factors of 9, then the 9s into factors of 3.

As I had $\displaystyle (3\times 3) \times (3\times 3) $ I could say that was $\displaystyle 3^4$