(x^2+1)(x^2+3)=

Solution for (x^2+1)(x^2+3)= equation:

Simplifying
(x2 + 1)(x2 + 3) = 0

Reorder the terms:
(1 + x2)(x2 + 3) = 0

Reorder the terms:
(1 + x2)(3 + x2) = 0

Multiply (1 + x2) * (3 + x2)
(1(3 + x2) + x2(3 + x2)) = 0
((3 * 1 + x2 * 1) + x2(3 + x2)) = 0
((3 + 1x2) + x2(3 + x2)) = 0
(3 + 1x2 + (3 * x2 + x2 * x2)) = 0
(3 + 1x2 + (3x2 + x4)) = 0

Combine like terms: 1x2 + 3x2 = 4x2
(3 + 4x2 + x4) = 0

Solving
3 + 4x2 + x4 = 0

Solving for variable 'x'.

Factor a trinomial.
(3 + x2)(1 + x2) = 0

Subproblem 1
Set the factor '(3 + x2)' equal to zero and attempt to solve:

Simplifying
3 + x2 = 0

Solving
3 + x2 = 0

Move all terms containing x to the left, all other terms to the right.

Add '-3' to each side of the equation.
3 + -3 + x2 = 0 + -3

Combine like terms: 3 + -3 = 0
0 + x2 = 0 + -3
x2 = 0 + -3

Combine like terms: 0 + -3 = -3
x2 = -3

Simplifying
x2 = -3

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.
Subproblem 2
Set the factor '(1 + x2)' equal to zero and attempt to solve:

Simplifying
1 + x2 = 0

Solving
1 + x2 = 0

Move all terms containing x to the left, all other terms to the right.

Add '-1' to each side of the equation.
1 + -1 + x2 = 0 + -1

Combine like terms: 1 + -1 = 0
0 + x2 = 0 + -1
x2 = 0 + -1

Combine like terms: 0 + -1 = -1
x2 = -1

Simplifying
x2 = -1

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.

The solution to this equation could not be determined.