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Simplifying 7r4 + -448 = 0 Reorder the terms: -448 + 7r4 = 0 Solving -448 + 7r4 = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '448' to each side of the equation. -448 + 448 + 7r4 = 0 + 448 Combine like terms: -448 + 448 = 0 0 + 7r4 = 0 + 448 7r4 = 0 + 448 Combine like terms: 0 + 448 = 448 7r4 = 448 Divide each side by '7'. r4 = 64 Simplifying r4 = 64 Reorder the terms: -64 + r4 = 64 + -64 Combine like terms: 64 + -64 = 0 -64 + r4 = 0 Factor a difference between two squares. (8 + r2)(-8 + r2) = 0Subproblem 1
Set the factor '(8 + r2)' equal to zero and attempt to solve: Simplifying 8 + r2 = 0 Solving 8 + r2 = 0 Move all terms containing r to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + r2 = 0 + -8 Combine like terms: 8 + -8 = 0 0 + r2 = 0 + -8 r2 = 0 + -8 Combine like terms: 0 + -8 = -8 r2 = -8 Simplifying r2 = -8 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 '(-8 + r2)' equal to zero and attempt to solve: Simplifying -8 + r2 = 0 Solving -8 + r2 = 0 Move all terms containing r to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + r2 = 0 + 8 Combine like terms: -8 + 8 = 0 0 + r2 = 0 + 8 r2 = 0 + 8 Combine like terms: 0 + 8 = 8 r2 = 8 Simplifying r2 = 8 Take the square root of each side: r = {-2.828427125, 2.828427125}Solution
r = {-2.828427125, 2.828427125}
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