exam Maths Puzzle Numerical Ability

In Exercise 18-21, use the following information.

A migrating elephant herd started moving at a rate of 6 miles per hour. One elephant stood still and was left behind. Then this

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exam Other Question
proove that square root of 2 is irrational! Solve the quadratice equation by completing the square:
x^2 - 6x - 3 = 0
x^2 - 6x = 3
x - 6x + 9 = 3
(x-3)^2 = 3
x - 3 = +/- radical 3
x = 3 +/- radical 3

Is this correct?