Question
Solve the inequality
x∈[21,1)∪(1,+∞)
Evaluate
2x−1<x
Find the domain
More Steps

Evaluate
2x−1≥0
Move the constant to the right side
2x≥0+1
Removing 0 doesn't change the value,so remove it from the expression
2x≥1
Divide both sides
22x≥21
Divide the numbers
x≥21
2x−1<x,x≥21
Separate the inequality into 2 possible cases
2x−1<x,x≥02x−1<x,x<0
Solve the inequality
More Steps

Solve the inequality
2x−1<x
Square both sides of the inequality
2x−1<x2
Move the expression to the left side
2x−1−x2<0
Move the constant to the right side
2x−x2<0−(−1)
Add the terms
2x−x2<1
Evaluate
x2−2x>−1
Add the same value to both sides
x2−2x+1>−1+1
Evaluate
x2−2x+1>0
Evaluate
(x−1)2>0
Calculate
(x−1)2=0
The only way a power can not be 0 is when the base not equals 0
x−1=0
Move the constant to the right side
x=0+1
Removing 0 doesn't change the value,so remove it from the expression
x=1
x=1,x≥02x−1<x,x<0
Since the left-hand side is always positive or 0,and the right-hand side is always negative,the statement is false for any value of x
x=1,x≥0x∈∅,x<0
Find the intersection
x∈[0,1)∪(1,+∞)x∈∅,x<0
Find the intersection
x∈[0,1)∪(1,+∞)x∈∅
Find the union
x∈[0,1)∪(1,+∞)
Check if the solution is in the defined range
x∈[0,1)∪(1,+∞),x≥21
Solution
x∈[21,1)∪(1,+∞)
Show Solution
