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Simplifying X + 3(x2 + 5x + -1) = 0 Reorder the terms: X + 3(-1 + 5x + x2) = 0 X + (-1 * 3 + 5x * 3 + x2 * 3) = 0 X + (-3 + 15x + 3x2) = 0 Reorder the terms: -3 + X + 15x + 3x2 = 0 Solving -3 + X + 15x + 3x2 = 0 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '3' to each side of the equation. -3 + X + 15x + 3 + 3x2 = 0 + 3 Reorder the terms: -3 + 3 + X + 15x + 3x2 = 0 + 3 Combine like terms: -3 + 3 = 0 0 + X + 15x + 3x2 = 0 + 3 X + 15x + 3x2 = 0 + 3 Combine like terms: 0 + 3 = 3 X + 15x + 3x2 = 3 Add '-15x' to each side of the equation. X + 15x + -15x + 3x2 = 3 + -15x Combine like terms: 15x + -15x = 0 X + 0 + 3x2 = 3 + -15x X + 3x2 = 3 + -15x Add '-3x2' to each side of the equation. X + 3x2 + -3x2 = 3 + -15x + -3x2 Combine like terms: 3x2 + -3x2 = 0 X + 0 = 3 + -15x + -3x2 X = 3 + -15x + -3x2 Simplifying X = 3 + -15x + -3x2
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