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Simplifying x2 + -2rx + 64 = 0 Reorder the terms: 64 + -2rx + x2 = 0 Solving 64 + -2rx + x2 = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-64' to each side of the equation. 64 + -2rx + -64 + x2 = 0 + -64 Reorder the terms: 64 + -64 + -2rx + x2 = 0 + -64 Combine like terms: 64 + -64 = 0 0 + -2rx + x2 = 0 + -64 -2rx + x2 = 0 + -64 Combine like terms: 0 + -64 = -64 -2rx + x2 = -64 Add '-1x2' to each side of the equation. -2rx + x2 + -1x2 = -64 + -1x2 Combine like terms: x2 + -1x2 = 0 -2rx + 0 = -64 + -1x2 -2rx = -64 + -1x2 Divide each side by '-2x'. r = 32x-1 + 0.5x Simplifying r = 32x-1 + 0.5x
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