297. 20/24;60/65;33/57;72/78.
298. 0,8;0,32;0,25;0,06;0,85.
299. 5/12;14/15;1/4;3/10
(4х²-5) / (х-6) = (5х+1) / (х-6) * (х-6)
4х²-5 = 5х+1
4х²-5 -5х-1 =0
4х²-5х-6 =0
D= 25 - 4*4*(-6) =25+96= 121
x₁= (5-11)/8 = -6/8= -3/4
x₂= (5+11) /8= 16/8=2
Ответ: х₁= -3/4, х₂=2