Solve for x. ax2 + (4a2 - 3b)x - 12ab = 0
here a=a, b=(4a2-3b) ,and c=-12ab by quadratic equation we get, = -(4a2-3b) _+ root (4a2-3b)2 - 4 (a)(-12ab)/2(a) =-(4a2-3b) _+ root (4a2 )2+(3b)2 - 2(4a2)(3b) +48a2b/2a =-(4a2-3b)_+root (4a2)2 + (3b)2 -24a2b + 48a2b/2a =-(4a2-3b)_+root (4a2)2 +(3b)2 + 24a2b/2a =-(4a2-3b) _+ root (4a2 + 3b)2/2a =-(4a2-3b)_+(4a2 + 3b)/2a so, x= -(4a2-3b) + (4a2+3b)/2a or x = -(4a2-3b) - (4a2+3b)/2a x = 6b/2a or x = -8a2/2a = -4a hope it helps....