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Simplifying 5x2 + 5x + -20 = 4 Reorder the terms: -20 + 5x + 5x2 = 4 Solving -20 + 5x + 5x2 = 4 Solving for variable 'x'. Reorder the terms: -20 + -4 + 5x + 5x2 = 4 + -4 Combine like terms: -20 + -4 = -24 -24 + 5x + 5x2 = 4 + -4 Combine like terms: 4 + -4 = 0 -24 + 5x + 5x2 = 0 Begin completing the square. Divide all terms by 5 the coefficient of the squared term: Divide each side by '5'. -4.8 + x + x2 = 0 Move the constant term to the right: Add '4.8' to each side of the equation. -4.8 + x + 4.8 + x2 = 0 + 4.8 Reorder the terms: -4.8 + 4.8 + x + x2 = 0 + 4.8 Combine like terms: -4.8 + 4.8 = 0.0 0.0 + x + x2 = 0 + 4.8 x + x2 = 0 + 4.8 Combine like terms: 0 + 4.8 = 4.8 x + x2 = 4.8 The x term is x. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. + 0.25 + x2 = 4.8 + 0.25 Combine like terms: + 0.25 = 1.25 1.25 + x2 = 4.8 + 0.25 Combine like terms: 4.8 + 0.25 = 5.05 1.25 + x2 = 5.05 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = 5.05 Calculate the square root of the right side: 2.247220505 Break this problem into two subproblems by setting (x + 0.5) equal to 2.247220505 and -2.247220505.Subproblem 1
x + 0.5 = 2.247220505 Simplifying x + 0.5 = 2.247220505 Reorder the terms: 0.5 + x = 2.247220505 Solving 0.5 + x = 2.247220505 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 2.247220505 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 2.247220505 + -0.5 x = 2.247220505 + -0.5 Combine like terms: 2.247220505 + -0.5 = 1.747220505 x = 1.747220505 Simplifying x = 1.747220505Subproblem 2
x + 0.5 = -2.247220505 Simplifying x + 0.5 = -2.247220505 Reorder the terms: 0.5 + x = -2.247220505 Solving 0.5 + x = -2.247220505 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -2.247220505 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -2.247220505 + -0.5 x = -2.247220505 + -0.5 Combine like terms: -2.247220505 + -0.5 = -2.747220505 x = -2.747220505 Simplifying x = -2.747220505Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.747220505, -2.747220505}
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