Log2 x 7 log2 x 8 1
Asked by maham237 @ in Mathematics viewed by 330 People
Find the exact solution to the equation. 7-log2(x+5) = 6
x = 3
x = 7
x = -3
x = -6
Answered by maham237 @
Answer:
x = -3
Step-by-step explanation:
You can try the answers to see which works. Or, you can actually solve the equation for x.
... 7 - log2(x+5) = 6
... 1 - log2(x+5) = 0 . . . . subtract 6
... 1 = log2(x+5) . . . . . . . add log2(x+5)
... 2 = x +5 . . . . . . . . . . . take the antilog
... -3 = x . . . . . . . . . . . . . subtract 5
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