book Maths Puzzle Numerical Ability

what is (2/5 d) to the second power

Read Solution (Total 0)

book Other Question

A multipling procedure for 28x32. Please help: If f(x)=ax^2+bx+c has roots 1 and 3 and f(-1)=16 then a=? b=? c=?
Please Please! And if you could please tell me how to solve it, that would be great too! Pleae and