To factor the expression 3x2 – 9x, Caleb found the GCF as shown. List the factors: 3x2 = 3 • x • x 9x = 3 • 3 • x GCF = 3 • 3 • x • x = 9x2 What is Caleb’s error?
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3x
2
=
3
⋅
x
⋅x
9x=
3
⋅3⋅
x
GCF(3x
2
, 9x)=
3
⋅
x
=3x
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Answer:
Caleb found the product of all factors, not just the ones common to each term.
Step-by-step explanation:
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