x-1/4-x>1/3
x-x>1/3+1/4
0>4/12+3/12
0>7/12
równanie sprzeczne
(x²-5x-3)/(x+7+1)>0 |*(x+8)
(x²-5x-3)>0
a=1
b=-5
c=-3
delta=(-5)²-4*1*(-3)
delta=25+12
delta=37
√delta=√37
x₁=(5-√37)/2
x₂=(5+√37)/2
x∈(-∞;5-√37/2)∨(5+√37/2;+∞)
x+15/25x²-1≤0 | *25x²-1
x+15≤0
x≤-15
x∈(-∞,-15>