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Simplifying equations

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I can't understand how to simplify the equations for example 7x to the 3rd power times 3y to the 2nd power. I am not sure how to simplify them. Can anyone please help me?

Solution Summary

This shows how to simplify an equation with variables and powers.

Solution Preview

The given problem is (7x) 3 x (3y) 2

Let us analyse the problem in steps. The formula to be used is

(ab) n = a n x b n

where, a and b can be either constants (numbers) or variables (like x, y, z.....)

Let us verify this with an example.

Let a = 1, b = 2 and c = 3

(ab) n = (1 x 2) 3 = 2 3 = 2 x 2 x ...

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