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Simplifying 3x(x + 1) = 2(x + -5) Reorder the terms: 3x(1 + x) = 2(x + -5) (1 * 3x + x * 3x) = 2(x + -5) (3x + 3x2) = 2(x + -5) Reorder the terms: 3x + 3x2 = 2(-5 + x) 3x + 3x2 = (-5 * 2 + x * 2) 3x + 3x2 = (-10 + 2x) Solving 3x + 3x2 = -10 + 2x Solving for variable 'x'. Reorder the terms: 10 + 3x + -2x + 3x2 = -10 + 2x + 10 + -2x Combine like terms: 3x + -2x = 1x 10 + 1x + 3x2 = -10 + 2x + 10 + -2x Reorder the terms: 10 + 1x + 3x2 = -10 + 10 + 2x + -2x Combine like terms: -10 + 10 = 0 10 + 1x + 3x2 = 0 + 2x + -2x 10 + 1x + 3x2 = 2x + -2x Combine like terms: 2x + -2x = 0 10 + 1x + 3x2 = 0 Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. 3.333333333 + 0.3333333333x + x2 = 0 Move the constant term to the right: Add '-3.333333333' to each side of the equation. 3.333333333 + 0.3333333333x + -3.333333333 + x2 = 0 + -3.333333333 Reorder the terms: 3.333333333 + -3.333333333 + 0.3333333333x + x2 = 0 + -3.333333333 Combine like terms: 3.333333333 + -3.333333333 = 0.000000000 0.000000000 + 0.3333333333x + x2 = 0 + -3.333333333 0.3333333333x + x2 = 0 + -3.333333333 Combine like terms: 0 + -3.333333333 = -3.333333333 0.3333333333x + x2 = -3.333333333 The x term is 0.3333333333x. Take half its coefficient (0.1666666667). Square it (0.02777777779) and add it to both sides. Add '0.02777777779' to each side of the equation. 0.3333333333x + 0.02777777779 + x2 = -3.333333333 + 0.02777777779 Reorder the terms: 0.02777777779 + 0.3333333333x + x2 = -3.333333333 + 0.02777777779 Combine like terms: -3.333333333 + 0.02777777779 = -3.30555555521 0.02777777779 + 0.3333333333x + x2 = -3.30555555521 Factor a perfect square on the left side: (x + 0.1666666667)(x + 0.1666666667) = -3.30555555521 Can't calculate square root of the right side. The solution to this equation could not be determined.
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