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Simplifying rx2 + 6x + -40 = 0 Reorder the terms: -40 + rx2 + 6x = 0 Solving -40 + rx2 + 6x = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '40' to each side of the equation. -40 + rx2 + 40 + 6x = 0 + 40 Reorder the terms: -40 + 40 + rx2 + 6x = 0 + 40 Combine like terms: -40 + 40 = 0 0 + rx2 + 6x = 0 + 40 rx2 + 6x = 0 + 40 Combine like terms: 0 + 40 = 40 rx2 + 6x = 40 Add '-6x' to each side of the equation. rx2 + 6x + -6x = 40 + -6x Combine like terms: 6x + -6x = 0 rx2 + 0 = 40 + -6x rx2 = 40 + -6x Divide each side by 'x2'. r = 40x-2 + -6x-1 Simplifying r = 40x-2 + -6x-1
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