Question
Factor the expression
x2(x2+1)
Evaluate
x4+x2
Rewrite the expression
x2×x2+x2
Solution
x2(x2+1)
Show Solution

Find the roots
x1=−i,x2=i,x3=0
Evaluate
x4+x2
To find the roots of the expression,set the expression equal to 0
x4+x2=0
Factor the expression
x2(x2+1)=0
Separate the equation into 2 possible cases
x2=0x2+1=0
The only way a power can be 0 is when the base equals 0
x=0x2+1=0
Solve the equation
More Steps

Evaluate
x2+1=0
Move the constant to the right-hand side and change its sign
x2=0−1
Removing 0 doesn't change the value,so remove it from the expression
x2=−1
Take the root of both sides of the equation and remember to use both positive and negative roots
x=±−1
Simplify the expression
x=±i
Separate the equation into 2 possible cases
x=ix=−i
x=0x=ix=−i
Solution
x1=−i,x2=i,x3=0
Show Solution
