Solve the equation. e4x + 4e2x - 21 = 0

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter2: Solving Equations
Section: Chapter Questions
Problem 29CT
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Solve the equation.

e4x + 4e2x - 21 = 0

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