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Simplifying 9x2 + -9x + 2 = (3x + -1)(3x + -2) Reorder the terms: 2 + -9x + 9x2 = (3x + -1)(3x + -2) Reorder the terms: 2 + -9x + 9x2 = (-1 + 3x)(3x + -2) Reorder the terms: 2 + -9x + 9x2 = (-1 + 3x)(-2 + 3x) Multiply (-1 + 3x) * (-2 + 3x) 2 + -9x + 9x2 = (-1(-2 + 3x) + 3x * (-2 + 3x)) 2 + -9x + 9x2 = ((-2 * -1 + 3x * -1) + 3x * (-2 + 3x)) 2 + -9x + 9x2 = ((2 + -3x) + 3x * (-2 + 3x)) 2 + -9x + 9x2 = (2 + -3x + (-2 * 3x + 3x * 3x)) 2 + -9x + 9x2 = (2 + -3x + (-6x + 9x2)) Combine like terms: -3x + -6x = -9x 2 + -9x + 9x2 = (2 + -9x + 9x2) Add '-2' to each side of the equation. 2 + -9x + -2 + 9x2 = 2 + -9x + -2 + 9x2 Reorder the terms: 2 + -2 + -9x + 9x2 = 2 + -9x + -2 + 9x2 Combine like terms: 2 + -2 = 0 0 + -9x + 9x2 = 2 + -9x + -2 + 9x2 -9x + 9x2 = 2 + -9x + -2 + 9x2 Reorder the terms: -9x + 9x2 = 2 + -2 + -9x + 9x2 Combine like terms: 2 + -2 = 0 -9x + 9x2 = 0 + -9x + 9x2 -9x + 9x2 = -9x + 9x2 Add '9x' to each side of the equation. -9x + 9x + 9x2 = -9x + 9x + 9x2 Combine like terms: -9x + 9x = 0 0 + 9x2 = -9x + 9x + 9x2 9x2 = -9x + 9x + 9x2 Combine like terms: -9x + 9x = 0 9x2 = 0 + 9x2 9x2 = 9x2 Add '-9x2' to each side of the equation. 9x2 + -9x2 = 9x2 + -9x2 Combine like terms: 9x2 + -9x2 = 0 0 = 9x2 + -9x2 Combine like terms: 9x2 + -9x2 = 0 0 = 0 Solving 0 = 0 Couldn't find a variable to solve for. This equation is an identity, all real numbers are solutions.
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