Question
Solve the inequality
Solve the inequality by testing the values in the interval
Solve the inequality by separating into cases
x∈(−∞,0]∪[5,+∞)
Evaluate
(x×1)x2(x−5)≥0
Remove the parentheses
x×1×x2(x−5)≥0
Multiply the terms
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Evaluate
x×1×x2(x−5)
Rewrite the expression
x×x2(x−5)
Multiply the terms with the same base by adding their exponents
x1+2(x−5)
Add the numbers
x3(x−5)
x3(x−5)≥0
Rewrite the expression
x3(x−5)=0
Separate the equation into 2 possible cases
x3=0x−5=0
The only way a power can be 0 is when the base equals 0
x=0x−5=0
Solve the equation
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Evaluate
x−5=0
Move the constant to the right-hand side and change its sign
x=0+5
Removing 0 doesn't change the value,so remove it from the expression
x=5
x=0x=5
Determine the test intervals using the critical values
x<00<x<5x>5
Choose a value form each interval
x1=−1x2=3x3=6
To determine if x<0 is the solution to the inequality,test if the chosen value x=−1 satisfies the initial inequality
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Evaluate
(−1)3(−1−5)≥0
Simplify
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Evaluate
(−1)3(−1−5)
Subtract the numbers
(−1)3(−6)
Evaluate the power
−(−6)
Multiply the numbers
6
6≥0
Check the inequality
true
x<0 is the solutionx2=3x3=6
To determine if 0<x<5 is the solution to the inequality,test if the chosen value x=3 satisfies the initial inequality
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Evaluate
33(3−5)≥0
Simplify
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Evaluate
33(3−5)
Subtract the numbers
33(−2)
Evaluate the power
27(−2)
Multiply the numbers
−54
−54≥0
Check the inequality
false
x<0 is the solution0<x<5 is not a solutionx3=6
To determine if x>5 is the solution to the inequality,test if the chosen value x=6 satisfies the initial inequality
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Evaluate
63(6−5)≥0
Simplify
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Evaluate
63(6−5)
Subtract the numbers
63×1
Any expression multiplied by 1 remains the same
63
63≥0
Calculate
216≥0
Check the inequality
true
x<0 is the solution0<x<5 is not a solutionx>5 is the solution
The original inequality is a nonstrict inequality,so include the critical value in the solution
x≤0 is the solutionx≥5 is the solution
Solution
x∈(−∞,0]∪[5,+∞)
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