121. PROVE: Special Factoring Formulas Prove the following formulas by expanding the right-hand side. (a) Difference of Cubes: A - B = (A – B)(A² + AB + B²) (b) Sum of Cubes: A + B = (A + B)(A? - AB + B²)

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter1: Fundamental Concepts Of Algebra
Section1.3: Algebraic Expressions
Problem 103E
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121. PROVE: Special Factoring Formulas Prove the following
formulas by expanding the right-hand side.
(a) Difference of Cubes:
A - B = (A – B)(A² + AB + B²)
(b) Sum of Cubes:
A + B = (A + B)(A? - AB + B²)
Transcribed Image Text:121. PROVE: Special Factoring Formulas Prove the following formulas by expanding the right-hand side. (a) Difference of Cubes: A - B = (A – B)(A² + AB + B²) (b) Sum of Cubes: A + B = (A + B)(A? - AB + B²)
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