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Simplifying X2 + -21x + 90 = 0 Reorder the terms: 90 + X2 + -21x = 0 Solving 90 + X2 + -21x = 0 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-90' to each side of the equation. 90 + X2 + -90 + -21x = 0 + -90 Reorder the terms: 90 + -90 + X2 + -21x = 0 + -90 Combine like terms: 90 + -90 = 0 0 + X2 + -21x = 0 + -90 X2 + -21x = 0 + -90 Combine like terms: 0 + -90 = -90 X2 + -21x = -90 Add '21x' to each side of the equation. X2 + -21x + 21x = -90 + 21x Combine like terms: -21x + 21x = 0 X2 + 0 = -90 + 21x X2 = -90 + 21x Simplifying X2 = -90 + 21x Reorder the terms: 90 + X2 + -21x = -90 + 21x + 90 + -21x Reorder the terms: 90 + X2 + -21x = -90 + 90 + 21x + -21x Combine like terms: -90 + 90 = 0 90 + X2 + -21x = 0 + 21x + -21x 90 + X2 + -21x = 21x + -21x Combine like terms: 21x + -21x = 0 90 + X2 + -21x = 0 The solution to this equation could not be determined.
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