Curriculum
Mathematics — Second Preparatory
Unit 1: Real Numbers
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Real Numbers
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Real Numbers — Lesson quiz
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Intervals and Operations on Them
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Intervals and Operations on Them — Lesson quiz
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Operations on Real Numbers
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Operations on Real Numbers — Lesson quiz
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Square and Cube Root Laws
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Square and Cube Root Laws — Lesson quiz
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Laws of Exponents
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Laws of Exponents — Lesson quiz
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Unit 2: Algebra
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Unit 3: Geometry
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Unit 4: Statistics
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Text lesson
Laws of Exponents
Laws of Exponents
Zero and negative exponents
Zero and negative exponents
- For any real number a that is not zero:
- a0 = 1. For example, 50 = 1. It follows from the division law: 52 ÷ 52 = 50 = 25 ÷ 25 = 1.
- a−n = 1 ÷ an. For example, 2−3 = 1 ÷ 23 = 1/8.
- Note that (3/2)−2 = (2/3)2 = 4/9. A negative exponent turns the fraction upside down.
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