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Simplifying (7 + 4x + 9x2 + 8x3) + -1(-4 + 4x + -9x2 + 8x3) = 0 Remove parenthesis around (7 + 4x + 9x2 + 8x3) 7 + 4x + 9x2 + 8x3 + -1(-4 + 4x + -9x2 + 8x3) = 0 7 + 4x + 9x2 + 8x3 + (-4 * -1 + 4x * -1 + -9x2 * -1 + 8x3 * -1) = 0 7 + 4x + 9x2 + 8x3 + (4 + -4x + 9x2 + -8x3) = 0 Reorder the terms: 7 + 4 + 4x + -4x + 9x2 + 9x2 + 8x3 + -8x3 = 0 Combine like terms: 7 + 4 = 11 11 + 4x + -4x + 9x2 + 9x2 + 8x3 + -8x3 = 0 Combine like terms: 4x + -4x = 0 11 + 0 + 9x2 + 9x2 + 8x3 + -8x3 = 0 11 + 9x2 + 9x2 + 8x3 + -8x3 = 0 Combine like terms: 9x2 + 9x2 = 18x2 11 + 18x2 + 8x3 + -8x3 = 0 Combine like terms: 8x3 + -8x3 = 0 11 + 18x2 + 0 = 0 11 + 18x2 = 0 Solving 11 + 18x2 = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-11' to each side of the equation. 11 + -11 + 18x2 = 0 + -11 Combine like terms: 11 + -11 = 0 0 + 18x2 = 0 + -11 18x2 = 0 + -11 Combine like terms: 0 + -11 = -11 18x2 = -11 Divide each side by '18'. x2 = -0.6111111111 Simplifying x2 = -0.6111111111 Reorder the terms: 0.6111111111 + x2 = -0.6111111111 + 0.6111111111 Combine like terms: -0.6111111111 + 0.6111111111 = 0.0000000000 0.6111111111 + x2 = 0.0000000000 The solution to this equation could not be determined.
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