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sineoko [7]
2 years ago
14

9 Apply index law three to simplify each of the following. a (m2) b 6(p^)

Mathematics
1 answer:
lisabon 2012 [21]2 years ago
6 0

Answer:

  • <u><em>See the law and the hypothetical example below.</em></u>

Explanation:

The <em>index law</em> that you are dealing with is:

            \dfrac{a^m}{a^n}=a^{m-n}

It is used when you have the quotient of powers with the same base.

To show you how to use that rule, let's work an example

Simplify:

              \dfrac{9a(m^2)}{6b(m^4)}

Factor 9 as 3² and 6 as 2×3:

         \dfrac{3^2a(m^2)}{2\times 3b(m^4)}

Group the factor with equal base:

           \dfrac{a}{2b}\times \dfrac{3^2}{3}\times \dfrac{m^2}{m^4}

Use the index law:

            \dfrac{a}{2b}\times {3^{(2-1)}}\times m^{(2-4)}\\\\\\ \dfrac{a}{2b}\times3\times m^{-2}\\\\\\\dfrac{3a}{2bm^2}

Note that it was used an additional rule:           a^{-n}=\dfrac{1}{a^n}

Thus,           m^{-2}=\dfrac{1}{m^2}

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