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Simplifying ix2 + -4x + -40 = 0 Reorder the terms: -40 + ix2 + -4x = 0 Solving -40 + ix2 + -4x = 0 Solving for variable 'i'. Move all terms containing i to the left, all other terms to the right. Add '40' to each side of the equation. -40 + ix2 + 40 + -4x = 0 + 40 Reorder the terms: -40 + 40 + ix2 + -4x = 0 + 40 Combine like terms: -40 + 40 = 0 0 + ix2 + -4x = 0 + 40 ix2 + -4x = 0 + 40 Combine like terms: 0 + 40 = 40 ix2 + -4x = 40 Add '4x' to each side of the equation. ix2 + -4x + 4x = 40 + 4x Combine like terms: -4x + 4x = 0 ix2 + 0 = 40 + 4x ix2 = 40 + 4x Divide each side by 'x2'. i = 40x-2 + 4x-1 Simplifying i = 40x-2 + 4x-1
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