Question
Solve the inequality
Solve the inequality by testing the values in the interval
Solve for x
x<0
Alternative Form
x∈(−∞,0)
Evaluate
−2x7>0
Change the signs on both sides of the inequality and flip the inequality sign
2x7<0
Multiply both sides of the inequality by 2
2x7×2<0×2
Multiply the terms
x7<0×2
Multiply the terms
x7<0
Rewrite the expression
x7=0
Find the critical values by solving the corresponding equation
x=0
Determine the test intervals using the critical values
x<0x>0
Choose a value form each interval
x1=−1x2=1
To determine if x<0 is the solution to the inequality,test if the chosen value x=−1 satisfies the initial inequality
More Steps

Evaluate
(−1)7<0
Calculate
−1<0
Check the inequality
true
x<0 is the solutionx2=1
To determine if x>0 is the solution to the inequality,test if the chosen value x=1 satisfies the initial inequality
More Steps

Evaluate
17<0
1 raised to any power equals to 1
1<0
Check the inequality
false
x<0 is the solutionx>0 is not a solution
Solution
x<0
Alternative Form
x∈(−∞,0)
Show Solution
