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Simplifying X2 + X = -70 Reorder the terms: X + X2 = -70 Solving X + X2 = -70 Solving for variable 'X'. Reorder the terms: 70 + X + X2 = -70 + 70 Combine like terms: -70 + 70 = 0 70 + X + X2 = 0 Begin completing the square. Move the constant term to the right: Add '-70' to each side of the equation. 70 + X + -70 + X2 = 0 + -70 Reorder the terms: 70 + -70 + X + X2 = 0 + -70 Combine like terms: 70 + -70 = 0 0 + X + X2 = 0 + -70 X + X2 = 0 + -70 Combine like terms: 0 + -70 = -70 X + X2 = -70 The X term is X. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. X + 0.25 + X2 = -70 + 0.25 Reorder the terms: 0.25 + X + X2 = -70 + 0.25 Combine like terms: -70 + 0.25 = -69.75 0.25 + X + X2 = -69.75 Factor a perfect square on the left side: (X + 0.5)(X + 0.5) = -69.75 Can't calculate square root of the right side. The solution to this equation could not be determined.
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