book Maths Puzzle Numerical Ability

Solve the equation and check for extraneous solutions.
1.5sqrt(3x-2)-3=7

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book Other Question

Let P be the point (p,q) and L the line y=mx+b . It is not necessary, but if you like you may assume that P lies below the line L. All your answers below should be algebraic expres A school has 5000 lockers. They are all closed. THere are 5000 students. Student number one goes through and opens every locker because each locker number is divisible by one. Stud