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Simplifying 3x2 + 6x + 77 = 0 Reorder the terms: 77 + 6x + 3x2 = 0 Solving 77 + 6x + 3x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. 25.66666667 + 2x + x2 = 0 Move the constant term to the right: Add '-25.66666667' to each side of the equation. 25.66666667 + 2x + -25.66666667 + x2 = 0 + -25.66666667 Reorder the terms: 25.66666667 + -25.66666667 + 2x + x2 = 0 + -25.66666667 Combine like terms: 25.66666667 + -25.66666667 = 0.00000000 0.00000000 + 2x + x2 = 0 + -25.66666667 2x + x2 = 0 + -25.66666667 Combine like terms: 0 + -25.66666667 = -25.66666667 2x + x2 = -25.66666667 The x term is 2x. Take half its coefficient (1). Square it (1) and add it to both sides. Add '1' to each side of the equation. 2x + 1 + x2 = -25.66666667 + 1 Reorder the terms: 1 + 2x + x2 = -25.66666667 + 1 Combine like terms: -25.66666667 + 1 = -24.66666667 1 + 2x + x2 = -24.66666667 Factor a perfect square on the left side: (x + 1)(x + 1) = -24.66666667 Can't calculate square root of the right side. The solution to this equation could not be determined.
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