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Simplifying 2a(a + -3) = -1 Reorder the terms: 2a(-3 + a) = -1 (-3 * 2a + a * 2a) = -1 (-6a + 2a2) = -1 Solving -6a + 2a2 = -1 Solving for variable 'a'. Reorder the terms: 1 + -6a + 2a2 = -1 + 1 Combine like terms: -1 + 1 = 0 1 + -6a + 2a2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 0.5 + -3a + a2 = 0 Move the constant term to the right: Add '-0.5' to each side of the equation. 0.5 + -3a + -0.5 + a2 = 0 + -0.5 Reorder the terms: 0.5 + -0.5 + -3a + a2 = 0 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + -3a + a2 = 0 + -0.5 -3a + a2 = 0 + -0.5 Combine like terms: 0 + -0.5 = -0.5 -3a + a2 = -0.5 The a term is -3a. Take half its coefficient (-1.5). Square it (2.25) and add it to both sides. Add '2.25' to each side of the equation. -3a + 2.25 + a2 = -0.5 + 2.25 Reorder the terms: 2.25 + -3a + a2 = -0.5 + 2.25 Combine like terms: -0.5 + 2.25 = 1.75 2.25 + -3a + a2 = 1.75 Factor a perfect square on the left side: (a + -1.5)(a + -1.5) = 1.75 Calculate the square root of the right side: 1.322875656 Break this problem into two subproblems by setting (a + -1.5) equal to 1.322875656 and -1.322875656.Subproblem 1
a + -1.5 = 1.322875656 Simplifying a + -1.5 = 1.322875656 Reorder the terms: -1.5 + a = 1.322875656 Solving -1.5 + a = 1.322875656 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + a = 1.322875656 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + a = 1.322875656 + 1.5 a = 1.322875656 + 1.5 Combine like terms: 1.322875656 + 1.5 = 2.822875656 a = 2.822875656 Simplifying a = 2.822875656Subproblem 2
a + -1.5 = -1.322875656 Simplifying a + -1.5 = -1.322875656 Reorder the terms: -1.5 + a = -1.322875656 Solving -1.5 + a = -1.322875656 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + a = -1.322875656 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + a = -1.322875656 + 1.5 a = -1.322875656 + 1.5 Combine like terms: -1.322875656 + 1.5 = 0.177124344 a = 0.177124344 Simplifying a = 0.177124344Solution
The solution to the problem is based on the solutions from the subproblems. a = {2.822875656, 0.177124344}
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