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Simplifying (3a + -4)(a + 2) = 6a + -2 Reorder the terms: (-4 + 3a)(a + 2) = 6a + -2 Reorder the terms: (-4 + 3a)(2 + a) = 6a + -2 Multiply (-4 + 3a) * (2 + a) (-4(2 + a) + 3a * (2 + a)) = 6a + -2 ((2 * -4 + a * -4) + 3a * (2 + a)) = 6a + -2 ((-8 + -4a) + 3a * (2 + a)) = 6a + -2 (-8 + -4a + (2 * 3a + a * 3a)) = 6a + -2 (-8 + -4a + (6a + 3a2)) = 6a + -2 Combine like terms: -4a + 6a = 2a (-8 + 2a + 3a2) = 6a + -2 Reorder the terms: -8 + 2a + 3a2 = -2 + 6a Solving -8 + 2a + 3a2 = -2 + 6a Solving for variable 'a'. Reorder the terms: -8 + 2 + 2a + -6a + 3a2 = -2 + 6a + 2 + -6a Combine like terms: -8 + 2 = -6 -6 + 2a + -6a + 3a2 = -2 + 6a + 2 + -6a Combine like terms: 2a + -6a = -4a -6 + -4a + 3a2 = -2 + 6a + 2 + -6a Reorder the terms: -6 + -4a + 3a2 = -2 + 2 + 6a + -6a Combine like terms: -2 + 2 = 0 -6 + -4a + 3a2 = 0 + 6a + -6a -6 + -4a + 3a2 = 6a + -6a Combine like terms: 6a + -6a = 0 -6 + -4a + 3a2 = 0 Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. -2 + -1.333333333a + a2 = 0 Move the constant term to the right: Add '2' to each side of the equation. -2 + -1.333333333a + 2 + a2 = 0 + 2 Reorder the terms: -2 + 2 + -1.333333333a + a2 = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -1.333333333a + a2 = 0 + 2 -1.333333333a + a2 = 0 + 2 Combine like terms: 0 + 2 = 2 -1.333333333a + a2 = 2 The a term is -1.333333333a. Take half its coefficient (-0.6666666665). Square it (0.4444444442) and add it to both sides. Add '0.4444444442' to each side of the equation. -1.333333333a + 0.4444444442 + a2 = 2 + 0.4444444442 Reorder the terms: 0.4444444442 + -1.333333333a + a2 = 2 + 0.4444444442 Combine like terms: 2 + 0.4444444442 = 2.4444444442 0.4444444442 + -1.333333333a + a2 = 2.4444444442 Factor a perfect square on the left side: (a + -0.6666666665)(a + -0.6666666665) = 2.4444444442 Calculate the square root of the right side: 1.56347192 Break this problem into two subproblems by setting (a + -0.6666666665) equal to 1.56347192 and -1.56347192.Subproblem 1
a + -0.6666666665 = 1.56347192 Simplifying a + -0.6666666665 = 1.56347192 Reorder the terms: -0.6666666665 + a = 1.56347192 Solving -0.6666666665 + a = 1.56347192 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '0.6666666665' to each side of the equation. -0.6666666665 + 0.6666666665 + a = 1.56347192 + 0.6666666665 Combine like terms: -0.6666666665 + 0.6666666665 = 0.0000000000 0.0000000000 + a = 1.56347192 + 0.6666666665 a = 1.56347192 + 0.6666666665 Combine like terms: 1.56347192 + 0.6666666665 = 2.2301385865 a = 2.2301385865 Simplifying a = 2.2301385865Subproblem 2
a + -0.6666666665 = -1.56347192 Simplifying a + -0.6666666665 = -1.56347192 Reorder the terms: -0.6666666665 + a = -1.56347192 Solving -0.6666666665 + a = -1.56347192 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '0.6666666665' to each side of the equation. -0.6666666665 + 0.6666666665 + a = -1.56347192 + 0.6666666665 Combine like terms: -0.6666666665 + 0.6666666665 = 0.0000000000 0.0000000000 + a = -1.56347192 + 0.6666666665 a = -1.56347192 + 0.6666666665 Combine like terms: -1.56347192 + 0.6666666665 = -0.8968052535 a = -0.8968052535 Simplifying a = -0.8968052535Solution
The solution to the problem is based on the solutions from the subproblems. a = {2.2301385865, -0.8968052535}
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