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Simplifying z2 + -3z + 16.9 = 0 Reorder the terms: 16.9 + -3z + z2 = 0 Solving 16.9 + -3z + z2 = 0 Solving for variable 'z'. Begin completing the square. Move the constant term to the right: Add '-16.9' to each side of the equation. 16.9 + -3z + -16.9 + z2 = 0 + -16.9 Reorder the terms: 16.9 + -16.9 + -3z + z2 = 0 + -16.9 Combine like terms: 16.9 + -16.9 = 0.0 0.0 + -3z + z2 = 0 + -16.9 -3z + z2 = 0 + -16.9 Combine like terms: 0 + -16.9 = -16.9 -3z + z2 = -16.9 The z term is -3z. Take half its coefficient (-1.5). Square it (2.25) and add it to both sides. Add '2.25' to each side of the equation. -3z + 2.25 + z2 = -16.9 + 2.25 Reorder the terms: 2.25 + -3z + z2 = -16.9 + 2.25 Combine like terms: -16.9 + 2.25 = -14.65 2.25 + -3z + z2 = -14.65 Factor a perfect square on the left side: (z + -1.5)(z + -1.5) = -14.65 Can't calculate square root of the right side. The solution to this equation could not be determined.
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