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Simplifying 2x2 + 4x + -9 = 2x2 + 2 Reorder the terms: -9 + 4x + 2x2 = 2x2 + 2 Reorder the terms: -9 + 4x + 2x2 = 2 + 2x2 Add '-2x2' to each side of the equation. -9 + 4x + 2x2 + -2x2 = 2 + 2x2 + -2x2 Combine like terms: 2x2 + -2x2 = 0 -9 + 4x + 0 = 2 + 2x2 + -2x2 -9 + 4x = 2 + 2x2 + -2x2 Combine like terms: 2x2 + -2x2 = 0 -9 + 4x = 2 + 0 -9 + 4x = 2 Solving -9 + 4x = 2 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 + 9 + 4x = 2 + 9 Combine like terms: -9 + 9 = 0 0 + 4x = 2 + 9 4x = 2 + 9 Combine like terms: 2 + 9 = 11 4x = 11 Divide each side by '4'. x = 2.75 Simplifying x = 2.75
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