Asked by Maria
Please Can Someone Help Me Solve For x Using Log Properties: log(base 3) x*(x-80)=4
Answers
Answered by
Barry
log(base 3) x*(x-80)=4
3^4 = x(x-80)
81 = x^2 - 80
quadratic equation
x= -1(rejected) or 81
x= 81
log properties used=
log(base a)b=k
a^k=b
hope it helps :)
3^4 = x(x-80)
81 = x^2 - 80
quadratic equation
x= -1(rejected) or 81
x= 81
log properties used=
log(base a)b=k
a^k=b
hope it helps :)
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