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  • 1 Post By skeeter
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April 19th, 2017, 06:59 AM   #1
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Getting stuck simplifying equations with unknown values.

(t to the power of 3)to the power of 2

w to the power of 9/w to the power of 4 (thats a fraction)

I have no idea where to start here as I've never really had to deal with simplifying powers. Any help would be massively appreciated!
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April 19th, 2017, 07:46 AM   #2
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Do you mean ...

$(t^3)^2$ or $t^{3^2}$. ?

first one simplifies to $t^6$, second one is $t^9$
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April 19th, 2017, 09:38 AM   #3
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The laws of exponents for positive, real number a and real numbers b and c are:

$\text {Law 1 is: } a^0 \equiv 1.$

$\text {Law 2 is: } a^1 \equiv a.$

$\text {Law 3 is: } a^{-b} \equiv \dfrac{1}{a^b} \equiv \left ( \dfrac{1}{a} \right )^b.$

$\text {Law 4 is: } a^{(b+c)} \equiv a^b * a^c.$

$\text {Law 5 is: } a^{(b-c)} \equiv \dfrac{a^b}{a ^c}.$

$\text {Law 6 is: } a^{(bc)} \equiv (a^b)^c.$

$\text {Law 7 is: } c \ne 0 \implies a^{(b \div c)} \equiv \sqrt[c]{a^b}.$ And obviously $b \div c = \dfrac{b}{c}.$

Once you memorize those seven laws, you can do this type of problem forever.

If the base (a in the formulation above) is not positive, there are some special exceptions.

Laws 1 and 3 do not apply to zero. Law 7 may not give a real number as an answer.

Now you know virtually all you need to know about exponents in algebra.

Last edited by JeffM1; April 19th, 2017 at 09:45 AM.
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April 19th, 2017, 11:11 AM   #4
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Law 8 is use Google...
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