Index Laws 4,5 & Zero Power Lesson

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Index Laws 4,5 & Zero Power

learning how to use index law 4, 5 and the zero law.

Index Law 4

When multiplying 2 or more numbers raised to the power of ’x’
raise each number in the brackets to the power

Examples

(a X b)ⁿ= (ab)ⁿ = aⁿ bⁿ

(2x)²= 2²x²= 4x²

Index Law 5

When dividing 2 numbers raised to the power of ‘m’
Raise each each number number in the brackets or the power of 5
Same rules apply with index

Examples

(a/b)^m = a^m/b^m

(y/2)⁴ = y⁴/2⁴ = y⁴/16

Zero power

Any number, except zero, that is raised to Zero will equal 1

Examples

a⁰ = 1

181⁰ = 1

2a⁰ = 2 x 1 =2

(2a)⁰ = 2⁰ x a⁰ = 1

Index Laws 4,5 & Zero Power

learning how to use index law 4, 5 and the zero law.

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