2r^4+46r^2-100=0

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Solution for 2r^4+46r^2-100=0 equation:


Simplifying
2r4 + 46r2 + -100 = 0

Reorder the terms:
-100 + 46r2 + 2r4 = 0

Solving
-100 + 46r2 + 2r4 = 0

Solving for variable 'r'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-50 + 23r2 + r4) = 0

Factor a trinomial.
2((-25 + -1r2)(2 + -1r2)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-25 + -1r2)' equal to zero and attempt to solve: Simplifying -25 + -1r2 = 0 Solving -25 + -1r2 = 0 Move all terms containing r to the left, all other terms to the right. Add '25' to each side of the equation. -25 + 25 + -1r2 = 0 + 25 Combine like terms: -25 + 25 = 0 0 + -1r2 = 0 + 25 -1r2 = 0 + 25 Combine like terms: 0 + 25 = 25 -1r2 = 25 Divide each side by '-1'. r2 = -25 Simplifying r2 = -25 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 '(2 + -1r2)' equal to zero and attempt to solve: Simplifying 2 + -1r2 = 0 Solving 2 + -1r2 = 0 Move all terms containing r to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1r2 = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1r2 = 0 + -2 -1r2 = 0 + -2 Combine like terms: 0 + -2 = -2 -1r2 = -2 Divide each side by '-1'. r2 = 2 Simplifying r2 = 2 Take the square root of each side: r = {-1.414213562, 1.414213562}

Solution

r = {-1.414213562, 1.414213562}

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