+128707 By a log property we can write
Log 4x + Log 2x = Log (8x^2) So this gives us
Log(8x^2) - 4 = 0 Subtract 4 from both sides
Log (8x^2) = 4 Which says that, exponentially
10^4 = 8x^2
10,000 = 8x^2 Divide by 8 on both sides
1250 = x^2 Take the square root of both sides
±√(1250) = x = ± 25√(2).....we must reject the negative root because it would mean that we would have the log of a negative number in the original equation, and that's undefined.
+128707 By a log property we can write
Log 4x + Log 2x = Log (8x^2) So this gives us
Log(8x^2) - 4 = 0 Subtract 4 from both sides
Log (8x^2) = 4 Which says that, exponentially
10^4 = 8x^2
10,000 = 8x^2 Divide by 8 on both sides
1250 = x^2 Take the square root of both sides
±√(1250) = x = ± 25√(2).....we must reject the negative root because it would mean that we would have the log of a negative number in the original equation, and that's undefined.
