Logarithmic Equations Worksheet Page 2
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3ID: A
A2.A.28: Logarithmic Equations 3: Solve a logarithmic equation by rewriting as an exponential
equation
Answer Section
1 ANS: 1
REF: 069626siii
2 ANS: 2
REF: 080209b
3 ANS:
18
REF: 080624b
4 ANS:
10
REF: 089342siii
5 ANS:
5
REF: 010439siii
6 ANS:
{5,4}
REF: 060230b
7 ANS:
11
REF: 060833b
8 ANS:
(2x 3)(x 5) 2
6 is extraneous
log
(x 3)
(x 3)
2
(2x 3)(x 5)
2
6x 9 2x
2
13x 15
x
2
7x 6 0
x
(x 6)(x 1) 0
x 1
REF: 011438a2
1
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