book Maths Puzzle Numerical Ability

3x2 +x -2 =0

I only need to solve this using QF and don't need to find the discriminant.

Read Solution (Total 0)

book Other Question

I am having dificulty solving logirithms once I put them in exponential form and vice versa. Here is the question I am confused on LOGx 16=4/3 how do we solve the intersection pt (x,y) of d following equations/lines

20x + 20y >= 250
15x + 25y >= 375
18x + 12y >= 200

these three lines will intersect at a point, wha