book Maths Puzzle Numerical Ability

Write as a single logarithm with coefficient 1, the expression:

2 log 5(small 5) x + ½ log5(small five)Square root x

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book Other Question

The sum of two consectutive positive integers is 11 less than their product.
find the integers.
if a car is traveling at 55 mph how far will it travel once you hit the brake?