Latest book Aptitude Question SOLUTION: 1)simplify 3(2x+1)-3(x-1)(x+1) 2) If 2x+1=3 and 2x^2-5x-3=24, what does x-3 equal? (plz explain) 3)find k so that x^2-kx+25 is a perfect square (Explain plz) 4)wh