SOLUTION: 4log2 x + log2 5 = log2 405

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Question 143746: 4log2 x + log2 5 = log2 405

Answer by oscargut(2103) About Me  (Show Source):
You can put this solution on YOUR website!
4log2 x + log2 5 = log2 405
log2(x^4)+log2(5)=log2(405)
log2(5x^4)=log2(405)
5x^4=405
x^4=81
x=3
Answer: x=3