2x^4+7x^2-49=0

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Solution for 2x^4+7x^2-49=0 equation:


Simplifying
2x4 + 7x2 + -49 = 0

Reorder the terms:
-49 + 7x2 + 2x4 = 0

Solving
-49 + 7x2 + 2x4 = 0

Solving for variable 'x'.

Factor a trinomial.
(-7 + -1x2)(7 + -2x2) = 0

Subproblem 1

Set the factor '(-7 + -1x2)' equal to zero and attempt to solve: Simplifying -7 + -1x2 = 0 Solving -7 + -1x2 = 0 Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + -1x2 = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -1x2 = 0 + 7 -1x2 = 0 + 7 Combine like terms: 0 + 7 = 7 -1x2 = 7 Divide each side by '-1'. x2 = -7 Simplifying x2 = -7 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 '(7 + -2x2)' equal to zero and attempt to solve: Simplifying 7 + -2x2 = 0 Solving 7 + -2x2 = 0 Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -2x2 = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -2x2 = 0 + -7 -2x2 = 0 + -7 Combine like terms: 0 + -7 = -7 -2x2 = -7 Divide each side by '-2'. 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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