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Simplifying X2 + -8x + -21 = 0 Reorder the terms: -21 + X2 + -8x = 0 Solving -21 + X2 + -8x = 0 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 = 0 + 21 Reorder the terms: -21 + 21 + X2 + -8x = 0 + 21 Combine like terms: -21 + 21 = 0 0 + X2 + -8x = 0 + 21 X2 + -8x = 0 + 21 Combine like terms: 0 + 21 = 21 X2 + -8x = 21 Add '8x' to each side of the equation. X2 + -8x + 8x = 21 + 8x Combine like terms: -8x + 8x = 0 X2 + 0 = 21 + 8x X2 = 21 + 8x Simplifying X2 = 21 + 8x Reorder the terms: -21 + X2 + -8x = 21 + 8x + -21 + -8x Reorder the terms: -21 + X2 + -8x = 21 + -21 + 8x + -8x Combine like terms: 21 + -21 = 0 -21 + X2 + -8x = 0 + 8x + -8x -21 + X2 + -8x = 8x + -8x Combine like terms: 8x + -8x = 0 -21 + X2 + -8x = 0 The solution to this equation could not be determined.
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