(2x^2+7)(2x^2-7)=

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Solution for (2x^2+7)(2x^2-7)= equation:


Simplifying
(2x2 + 7)(2x2 + -7) = 0

Reorder the terms:
(7 + 2x2)(2x2 + -7) = 0

Reorder the terms:
(7 + 2x2)(-7 + 2x2) = 0

Multiply (7 + 2x2) * (-7 + 2x2)
(7(-7 + 2x2) + 2x2 * (-7 + 2x2)) = 0
((-7 * 7 + 2x2 * 7) + 2x2 * (-7 + 2x2)) = 0
((-49 + 14x2) + 2x2 * (-7 + 2x2)) = 0
(-49 + 14x2 + (-7 * 2x2 + 2x2 * 2x2)) = 0
(-49 + 14x2 + (-14x2 + 4x4)) = 0

Combine like terms: 14x2 + -14x2 = 0
(-49 + 0 + 4x4) = 0
(-49 + 4x4) = 0

Solving
-49 + 4x4 = 0

Solving for variable 'x'.

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

Add '49' to each side of the equation.
-49 + 49 + 4x4 = 0 + 49

Combine like terms: -49 + 49 = 0
0 + 4x4 = 0 + 49
4x4 = 0 + 49

Combine like terms: 0 + 49 = 49
4x4 = 49

Divide each side by '4'.
x4 = 12.25

Simplifying
x4 = 12.25

Reorder the terms:
-12.25 + x4 = 12.25 + -12.25

Combine like terms: 12.25 + -12.25 = 0.00
-12.25 + x4 = 0.00

Factor a difference between two squares.
(3.5 + x2)(-3.5 + x2) = 0.00

Subproblem 1

Set the factor '(3.5 + x2)' equal to zero and attempt to solve: Simplifying 3.5 + x2 = 0 Solving 3.5 + x2 = 0 Move all terms containing x to the left, all other terms to the right. Add '-3.5' to each side of the equation. 3.5 + -3.5 + x2 = 0 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + x2 = 0 + -3.5 x2 = 0 + -3.5 Combine like terms: 0 + -3.5 = -3.5 x2 = -3.5 Simplifying x2 = -3.5 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 '(-3.5 + x2)' equal to zero and attempt to solve: Simplifying -3.5 + x2 = 0 Solving -3.5 + x2 = 0 Move all terms containing x to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + x2 = 0 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + x2 = 0 + 3.5 x2 = 0 + 3.5 Combine like terms: 0 + 3.5 = 3.5 x2 = 3.5 Simplifying x2 = 3.5 Take the square root of each side: x = {-1.870828693, 1.870828693}

Solution

x = {-1.870828693, 1.870828693}

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