1)
2)
4-x²≥0
-x²≥-4
x²≤4
x≤2 ∨ x≥-2
x∈<-2,2>
(x-3)(x-7)<5(x-3)
(x-3)(x-7)-5(x-3)<0
(x-3)(x-7-5)<0
(x-3)(x-12)<0
x∈(3,12)
1)
2)
1)
4-x²≥0
-x²≥-4
x²≤4
x≤2 ∨ x≥-2
x∈<-2,2>
2)
(x-3)(x-7)<5(x-3)
(x-3)(x-7)-5(x-3)<0
(x-3)(x-7-5)<0
(x-3)(x-12)<0
x∈(3,12)