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Simplifying X2 + 8x + 21 = 3 Reorder the terms: 21 + X2 + 8x = 3 Solving 21 + X2 + 8x = 3 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-21' to each side of the equation. 21 + X2 + -21 + 8x = 3 + -21 Reorder the terms: 21 + -21 + X2 + 8x = 3 + -21 Combine like terms: 21 + -21 = 0 0 + X2 + 8x = 3 + -21 X2 + 8x = 3 + -21 Combine like terms: 3 + -21 = -18 X2 + 8x = -18 Add '-8x' to each side of the equation. X2 + 8x + -8x = -18 + -8x Combine like terms: 8x + -8x = 0 X2 + 0 = -18 + -8x X2 = -18 + -8x Simplifying X2 = -18 + -8x Reorder the terms: 18 + X2 + 8x = -18 + -8x + 18 + 8x Reorder the terms: 18 + X2 + 8x = -18 + 18 + -8x + 8x Combine like terms: -18 + 18 = 0 18 + X2 + 8x = 0 + -8x + 8x 18 + X2 + 8x = -8x + 8x Combine like terms: -8x + 8x = 0 18 + X2 + 8x = 0 The solution to this equation could not be determined.
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