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Simplifying 81x2 + 7x + 49 = 0 Reorder the terms: 49 + 7x + 81x2 = 0 Solving 49 + 7x + 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 + 0.08641975309x + x2 = 0 Move the constant term to the right: Add '-0.6049382716' to each side of the equation. 0.6049382716 + 0.08641975309x + -0.6049382716 + x2 = 0 + -0.6049382716 Reorder the terms: 0.6049382716 + -0.6049382716 + 0.08641975309x + x2 = 0 + -0.6049382716 Combine like terms: 0.6049382716 + -0.6049382716 = 0.0000000000 0.0000000000 + 0.08641975309x + x2 = 0 + -0.6049382716 0.08641975309x + x2 = 0 + -0.6049382716 Combine like terms: 0 + -0.6049382716 = -0.6049382716 0.08641975309x + x2 = -0.6049382716 The x term is 0.08641975309x. Take half its coefficient (0.04320987655). Square it (0.001867093431) and add it to both sides. Add '0.001867093431' to each side of the equation. 0.08641975309x + 0.001867093431 + x2 = -0.6049382716 + 0.001867093431 Reorder the terms: 0.001867093431 + 0.08641975309x + x2 = -0.6049382716 + 0.001867093431 Combine like terms: -0.6049382716 + 0.001867093431 = -0.603071178169 0.001867093431 + 0.08641975309x + x2 = -0.603071178169 Factor a perfect square on the left side: (x + 0.04320987655)(x + 0.04320987655) = -0.603071178169 Can't calculate square root of the right side. The solution to this equation could not be determined.
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