Question
Factor the expression
8u2(2−u2)
Evaluate
16u2−8u4
Rewrite the expression
8u2×2−8u2×u2
Solution
8u2(2−u2)
Show Solution

Find the roots
u1=−2,u2=0,u3=2
Alternative Form
u1≈−1.414214,u2=0,u3≈1.414214
Evaluate
16u2−8u4
To find the roots of the expression,set the expression equal to 0
16u2−8u4=0
Factor the expression
8u2(2−u2)=0
Divide both sides
u2(2−u2)=0
Separate the equation into 2 possible cases
u2=02−u2=0
The only way a power can be 0 is when the base equals 0
u=02−u2=0
Solve the equation
More Steps

Evaluate
2−u2=0
Move the constant to the right-hand side and change its sign
−u2=0−2
Removing 0 doesn't change the value,so remove it from the expression
−u2=−2
Change the signs on both sides of the equation
u2=2
Take the root of both sides of the equation and remember to use both positive and negative roots
u=±2
Separate the equation into 2 possible cases
u=2u=−2
u=0u=2u=−2
Solution
u1=−2,u2=0,u3=2
Alternative Form
u1≈−1.414214,u2=0,u3≈1.414214
Show Solution
