Solve the Equation: x⁴ + x² = 0 Using Factoring

Question

x4+x2=0 x^4+x^2=0

Video Solution

Solution Steps

00:04 Let's find the value of X.
00:07 First, factor the expression with X squared.
00:14 Next, remove the common factor from the parentheses.
00:25 Great! This is one solution that makes the equation equal zero.
00:30 Now, let's see which solutions make the second factor zero.
00:36 To do this, let's isolate X.
00:41 Remember, any number squared is positive, so there is no solution here.
00:46 And that concludes our solution.

Step-by-Step Solution

The problem at hand is to solve the equation x4+x2=0 x^4 + x^2 = 0 .

Let's begin by factoring the expression:

The given equation is: x4+x2=0 x^4 + x^2 = 0

We can factor out the common factor of x2 x^2 from both terms:

x2(x2+1)=0 x^2(x^2 + 1) = 0

To solve for x x , we set each factor equal to zero:

  • x2=0 x^2 = 0

Solving for x x , we have:

x=0 x = 0

Next, consider the second factor:

  • x2+1=0 x^2 + 1 = 0

Solving for x x , we have:

x2=1 x^2 = -1

Since x2=1 x^2 = -1 has no real solutions, we ignore these solutions in the real number system.

Thus, the only real solution to the equation x4+x2=0 x^4 + x^2 = 0 is:

x=0 x = 0

Answer

x=0 x=0