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Simplifying X4 + -7x2 + 4x + 20 = 0 Reorder the terms: 20 + X4 + 4x + -7x2 = 0 Solving 20 + X4 + 4x + -7x2 = 0 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + X4 + 4x + -20 + -7x2 = 0 + -20 Reorder the terms: 20 + -20 + X4 + 4x + -7x2 = 0 + -20 Combine like terms: 20 + -20 = 0 0 + X4 + 4x + -7x2 = 0 + -20 X4 + 4x + -7x2 = 0 + -20 Combine like terms: 0 + -20 = -20 X4 + 4x + -7x2 = -20 Add '-4x' to each side of the equation. X4 + 4x + -4x + -7x2 = -20 + -4x Combine like terms: 4x + -4x = 0 X4 + 0 + -7x2 = -20 + -4x X4 + -7x2 = -20 + -4x Add '7x2' to each side of the equation. X4 + -7x2 + 7x2 = -20 + -4x + 7x2 Combine like terms: -7x2 + 7x2 = 0 X4 + 0 = -20 + -4x + 7x2 X4 = -20 + -4x + 7x2 Simplifying X4 = -20 + -4x + 7x2 Reorder the terms: 20 + X4 + 4x + -7x2 = -20 + -4x + 7x2 + 20 + 4x + -7x2 Reorder the terms: 20 + X4 + 4x + -7x2 = -20 + 20 + -4x + 4x + 7x2 + -7x2 Combine like terms: -20 + 20 = 0 20 + X4 + 4x + -7x2 = 0 + -4x + 4x + 7x2 + -7x2 20 + X4 + 4x + -7x2 = -4x + 4x + 7x2 + -7x2 Combine like terms: -4x + 4x = 0 20 + X4 + 4x + -7x2 = 0 + 7x2 + -7x2 20 + X4 + 4x + -7x2 = 7x2 + -7x2 Combine like terms: 7x2 + -7x2 = 0 20 + X4 + 4x + -7x2 = 0 The solution to this equation could not be determined.
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