Question
Solve the inequality
x∈(−∞,−1)∪(1,+∞)
Evaluate
x2>∣x×1∣
When the expression in absolute value bars is not negative, remove the bars
x2>∣x×1∣
Any expression multiplied by 1 remains the same
x2>∣x∣
Swap the sides
∣x∣<x2
Rearrange the terms
∣x∣−x2<0
Separate the inequality into 2 possible cases
x−x2<0,x≥0−x−x2<0,x<0
Evaluate
More Steps

Evaluate
x−x2<0
Evaluate
x2−x>0
Add the same value to both sides
x2−x+41>41
Evaluate
(x−21)2>41
Take the 2-th root on both sides of the inequality
(x−21)2>41
Calculate
x−21>21
Separate the inequality into 2 possible cases
x−21>21x−21<−21
Calculate
More Steps

Evaluate
x−21>21
Move the constant to the right side
x>21+21
Add the numbers
x>1
x>1x−21<−21
Cancel equal terms on both sides of the expression
x>1x<0
Find the union
x∈(−∞,0)∪(1,+∞)
x∈(−∞,0)∪(1,+∞),x≥0−x−x2<0,x<0
Evaluate
More Steps

Evaluate
−x−x2<0
Evaluate
x2+x>0
Add the same value to both sides
x2+x+41>41
Evaluate
(x+21)2>41
Take the 2-th root on both sides of the inequality
(x+21)2>41
Calculate
x+21>21
Separate the inequality into 2 possible cases
x+21>21x+21<−21
Cancel equal terms on both sides of the expression
x>0x+21<−21
Calculate
More Steps

Evaluate
x+21<−21
Move the constant to the right side
x<−21−21
Subtract the numbers
x<−1
x>0x<−1
Find the union
x∈(−∞,−1)∪(0,+∞)
x∈(−∞,0)∪(1,+∞),x≥0x∈(−∞,−1)∪(0,+∞),x<0
Find the intersection
x>1x∈(−∞,−1)∪(0,+∞),x<0
Find the intersection
x>1x<−1
Solution
x∈(−∞,−1)∪(1,+∞)
Show Solution
