exam Maths Puzzle Numerical Ability

I am stumped on this problem.
Is the square root of x^2 = x an identity (true for all values of x)?
Thanks for your help

Read Solution (Total 0)

exam Other Question

Jyne , an conomist, wishes to establish the equlibrium price and quantity of food commodity consumed nationally . she collected the following data on both the consumer and suppl simplify (a^2-9)+(a-3)
i divided them and i came up with a+3 but since it looks like an addition problem im not sure how to work it out.