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Multiplying Exponents

 

 

When a number in exponent notation is raised to a power we multiply the exponents.

Consider:

Text Box:   = (a × a) × (a × a) × (a × a)  =    = a6

This is known as the third law of exponents:

Text Box: (ax)y = axy

 

 

Example:

Simplify the following, giving your answers in exponent form

Text Box: a)  (52)3    b) (y6)2    c) (x3)4 × (x2)4    d) (a5)3 ÷ (a2)6

 

Solution:

Text Box: a)  (52)3 = 52×3 = 56     b) (y6)2 = y6×2 = y12     c) (x3)4 × (x2)4 = x3×4 × x2×4 = x12 × x8 = x12+8 = x20    d) (a5)3 ÷ (a2)6 = a5×3 ÷ a2×6 = a15 ÷ a12 = a15–12 = a3

 

 

The following video shows another example of multiplying exponents

 

 

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Useful Links:
Exponents - Math.com
 
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