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Simplifying 4X2 + 8x = 21 Solving 4X2 + 8x = 21 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-8x' to each side of the equation. 4X2 + 8x + -8x = 21 + -8x Combine like terms: 8x + -8x = 0 4X2 + 0 = 21 + -8x 4X2 = 21 + -8x Divide each side by '4'. X2 = 5.25 + -2x Simplifying X2 = 5.25 + -2x Reorder the terms: -5.25 + X2 + 2x = 5.25 + -2x + -5.25 + 2x Reorder the terms: -5.25 + X2 + 2x = 5.25 + -5.25 + -2x + 2x Combine like terms: 5.25 + -5.25 = 0.00 -5.25 + X2 + 2x = 0.00 + -2x + 2x -5.25 + X2 + 2x = -2x + 2x Combine like terms: -2x + 2x = 0 -5.25 + X2 + 2x = 0 The solution to this equation could not be determined.
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