exam
Maths Puzzle
Numerical Ability
Did I do this problem correctly?
solve by using quadratic formula
x^2-4X-60=0
x=1(-4)+- radical 4^2+4*1*(-60)/2*1
Read Solution (Total 0)
exam Other Question
R2 multiplied by 7R = 6396
Find R so that the product will be correct.
http://img176.imageshack.us/img176/1189/logarithmjx2.jpg
how can you solve the first one ? my 1st try resulted to x=2 and x=1.
about the last 2, how can you express into loga