Solve the inequality ∣x2−5x+4∣≤0|x^2 - 5x + 4| \leq 0∣x2−5x+4∣≤0.
No solution
x=1,4x = 1, 4x=1,4
x∈[1,4]x \in [1, 4]x∈[1,4]
x∈(1,4)x \in (1, 4)x∈(1,4)