решить уравнение ( 4-11y)^2-1=0 ( 4t-3)^2-25t^2=0
16-88у+121у²-1=0 121у²-88у+15=0 у₁=88+√(7744-7260) = 88+22 = 110 = 5/11 242 242 242 у₂=88-√(7744-7260) = 88-22 = 66 = 3/11 242 242 242 16t²-24t+9-25t²=0 -9t²-24t+9=0 3t²+8t-3=0 t₁=-8+√(64+36) = -8+10 = 1/3 6 6 t₂=-8-√(64+36) = -8-10 = -3 6 6