4 7 7x+25 - Error Analysis. A classmate said that the sum of r²-9 and x+3 is -9 -

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter1: Variables, Expressions, And Integers
Section1.1: Expressions And Variables
Problem 2C
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What mistake did your classmate make? What is the correct sum? Show your work.

4
7
7x+ 25
3. Error Analysis. A classmate said that the sum of -9 and x+3 is x -9 .
Transcribed Image Text:4 7 7x+ 25 3. Error Analysis. A classmate said that the sum of -9 and x+3 is x -9 .
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