Question
Simplify the expression
2x2−2x−2x3
Evaluate
2x2−2x×1−2x3
Solution
2x2−2x−2x3
Show Solution

Factor the expression
2x×(x−1−x22x)
Evaluate
2x2−2x×1−2x3
Multiply the terms
2x2−2x−2x3
Rewrite the expression
2x×x−1−2x×x22x
Solution
2x×(x−1−x22x)
Show Solution

Find the roots
x=0
Evaluate
2x2−2x×1−2x3
To find the roots of the expression,set the expression equal to 0
2x2−2x×1−2x3=0
Find the domain
More Steps

Evaluate
2x2−2x×1≥0
Multiply the terms
2x2−2x≥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,+∞)
2x2−2x×1−2x3=0,x∈(−∞,0]∪[1,+∞)
Calculate
2x2−2x×1−2x3=0
Multiply the terms
2x2−2x−2x3=0
Move the expression to the right-hand side and change its sign
2x2−2x=2x3
Evaluate
2x2−2x=2x3,2x3≥0
Evaluate
More Steps

Evaluate
2x3≥0
Rewrite the expression
x3≥0
The only way a base raised to an odd power can be greater than or equal to 0 is if the base is greater than or equal to 0
x≥0
2x2−2x=2x3,x≥0
Solve the equation for x
More Steps

Evaluate
2x2−2x=2x3
Raise both sides of the equation to the 2-th power to eliminate the isolated 2-th root
(2x2−2x)2=(2x3)2
Evaluate the power
2x2−2x=4x6
Move the expression to the left side
2x2−2x−4x6=0
Factor the expression
−2x(1+x)(2x4−2x3+2x2−2x+1)=0
Divide both sides
x(1+x)(2x4−2x3+2x2−2x+1)=0
Separate the equation into 3 possible cases
x=01+x=02x4−2x3+2x2−2x+1=0
Solve the equation
More Steps

Evaluate
1+x=0
Move the constant to the right-hand side and change its sign
x=0−1
Removing 0 doesn't change the value,so remove it from the expression
x=−1
x=0x=−12x4−2x3+2x2−2x+1=0
Solve the equation
x=0x=−1x∈/R
Find the union
x=0x=−1
x=0x=−1,x≥0
Find the intersection
x=0
Check if the solution is in the defined range
x=0,x∈(−∞,0]∪[1,+∞)
Solution
x=0
Show Solution
