4, Lesson 5, Unit 1, Grade 8, EngageNY icon
Instructional Activity

Discussion

Lesson 5. Unit 1. Grade 8 EngageNY

EngageNY5 min(s)

This Instructional Activity is a part of the Lesson 5, Unit 1, Grade 8. We now state our main objective: For any non zero numbers x and y and for all integers a and b, (10)-(12) are true. Identities (10)-(12) are called the laws of exponents for integer exponents. They clearly generalize (6)-(8). Consider mentioning that (10)-(12) are valid even when a and b are rational numbers. Make sure they know rational numbers refer to positive and negative fractions. The fact that they are true also for all real numbers can only be proved in college.

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