Question

Which of the following is the solution to 3x | x- 1 | >12

Answer 1

C

Explanation:

Inequalities of the type | x | ≥ a , have solutions of the form

x ≤ - a OR x ≥ a

Given

3 | x - 1 | ≥ 12 ( divide both sides by 3 )

| x - 1 | ≥ 4

Then

x - 1 ≤ - 4 OR x - 1 ≥ 4

x - 1 ≤ - 4 ( add 1 to both sides )

x ≤ - 3

OR

x - 1 ≥ 4 ( add 1 to both sides )

x≥ 5

solution is x ≤ - 3 or x ≥ 5 → C

Answer 2

omg ok find value of x and do

Explanation: