(7x^2+1)(3x^2+5)=0

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Solution for (7x^2+1)(3x^2+5)=0 equation:


Simplifying
(7x2 + 1)(3x2 + 5) = 0

Reorder the terms:
(1 + 7x2)(3x2 + 5) = 0

Reorder the terms:
(1 + 7x2)(5 + 3x2) = 0

Multiply (1 + 7x2) * (5 + 3x2)
(1(5 + 3x2) + 7x2 * (5 + 3x2)) = 0
((5 * 1 + 3x2 * 1) + 7x2 * (5 + 3x2)) = 0
((5 + 3x2) + 7x2 * (5 + 3x2)) = 0
(5 + 3x2 + (5 * 7x2 + 3x2 * 7x2)) = 0
(5 + 3x2 + (35x2 + 21x4)) = 0

Combine like terms: 3x2 + 35x2 = 38x2
(5 + 38x2 + 21x4) = 0

Solving
5 + 38x2 + 21x4 = 0

Solving for variable 'x'.

Factor a trinomial.
(5 + 3x2)(1 + 7x2) = 0

Subproblem 1

Set the factor '(5 + 3x2)' equal to zero and attempt to solve: Simplifying 5 + 3x2 = 0 Solving 5 + 3x2 = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + 3x2 = 0 + -5 Combine like terms: 5 + -5 = 0 0 + 3x2 = 0 + -5 3x2 = 0 + -5 Combine like terms: 0 + -5 = -5 3x2 = -5 Divide each side by '3'. x2 = -1.666666667 Simplifying x2 = -1.666666667 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 + 7x2)' equal to zero and attempt to solve: Simplifying 1 + 7x2 = 0 Solving 1 + 7x2 = 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 + 7x2 = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 7x2 = 0 + -1 7x2 = 0 + -1 Combine like terms: 0 + -1 = -1 7x2 = -1 Divide each side by '7'. x2 = -0.1428571429 Simplifying x2 = -0.1428571429 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.

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