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Simplifying 4x2 + 20X + 9 = 0 Reorder the terms: 9 + 20X + 4x2 = 0 Solving 9 + 20X + 4x2 = 0 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + 20X + -9 + 4x2 = 0 + -9 Reorder the terms: 9 + -9 + 20X + 4x2 = 0 + -9 Combine like terms: 9 + -9 = 0 0 + 20X + 4x2 = 0 + -9 20X + 4x2 = 0 + -9 Combine like terms: 0 + -9 = -9 20X + 4x2 = -9 Add '-4x2' to each side of the equation. 20X + 4x2 + -4x2 = -9 + -4x2 Combine like terms: 4x2 + -4x2 = 0 20X + 0 = -9 + -4x2 20X = -9 + -4x2 Divide each side by '20'. X = -0.45 + -0.2x2 Simplifying X = -0.45 + -0.2x2
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