6. Solving Exponential and Logarithmic Equations
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If two equivalent logarithmic expressions have the same base, then the arguments must be equal.
x ≈ 10.61
log_c a = log_b a/log_b c
Calculate logarithm
a/b/c= a * c/b
Commutative Property of Multiplication
m* log_9(a)=log_9(a^m)
Equate arguments
(a-b)^2=a^2-2ab+b^2
LHS-2x=RHS-2x
Substitute values
- (- a)=a
Calculate power
Identity Property of Multiplication
Multiply
Subtract term
Split into factors
sqrt(a* b)=sqrt(a)*sqrt(b)
Calculate root
Factor out 2
Cancel out common factors
x= 10.61
Subtract term
Multiply
Calculate logarithm
x= 3.39
Subtract term
Multiply