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Simplifying z2 + -14z + 245 = 0 Reorder the terms: 245 + -14z + z2 = 0 Solving 245 + -14z + z2 = 0 Solving for variable 'z'. Begin completing the square. Move the constant term to the right: Add '-245' to each side of the equation. 245 + -14z + -245 + z2 = 0 + -245 Reorder the terms: 245 + -245 + -14z + z2 = 0 + -245 Combine like terms: 245 + -245 = 0 0 + -14z + z2 = 0 + -245 -14z + z2 = 0 + -245 Combine like terms: 0 + -245 = -245 -14z + z2 = -245 The z term is -14z. Take half its coefficient (-7). Square it (49) and add it to both sides. Add '49' to each side of the equation. -14z + 49 + z2 = -245 + 49 Reorder the terms: 49 + -14z + z2 = -245 + 49 Combine like terms: -245 + 49 = -196 49 + -14z + z2 = -196 Factor a perfect square on the left side: (z + -7)(z + -7) = -196 Can't calculate square root of the right side. The solution to this equation could not be determined.
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