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Simplifying 81x2 + 9x + 49 = 0 Reorder the terms: 49 + 9x + 81x2 = 0 Solving 49 + 9x + 81x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 81 the coefficient of the squared term: Divide each side by '81'. 0.6049382716 + 0.1111111111x + x2 = 0 Move the constant term to the right: Add '-0.6049382716' to each side of the equation. 0.6049382716 + 0.1111111111x + -0.6049382716 + x2 = 0 + -0.6049382716 Reorder the terms: 0.6049382716 + -0.6049382716 + 0.1111111111x + x2 = 0 + -0.6049382716 Combine like terms: 0.6049382716 + -0.6049382716 = 0.0000000000 0.0000000000 + 0.1111111111x + x2 = 0 + -0.6049382716 0.1111111111x + x2 = 0 + -0.6049382716 Combine like terms: 0 + -0.6049382716 = -0.6049382716 0.1111111111x + x2 = -0.6049382716 The x term is 0.1111111111x. Take half its coefficient (0.05555555555). Square it (0.003086419752) and add it to both sides. Add '0.003086419752' to each side of the equation. 0.1111111111x + 0.003086419752 + x2 = -0.6049382716 + 0.003086419752 Reorder the terms: 0.003086419752 + 0.1111111111x + x2 = -0.6049382716 + 0.003086419752 Combine like terms: -0.6049382716 + 0.003086419752 = -0.601851851848 0.003086419752 + 0.1111111111x + x2 = -0.601851851848 Factor a perfect square on the left side: (x + 0.05555555555)(x + 0.05555555555) = -0.601851851848 Can't calculate square root of the right side. The solution to this equation could not be determined.
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