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Simplifying 4x2 + 7x + -35 = 0 Reorder the terms: -35 + 7x + 4x2 = 0 Solving -35 + 7x + 4x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. -8.75 + 1.75x + x2 = 0 Move the constant term to the right: Add '8.75' to each side of the equation. -8.75 + 1.75x + 8.75 + x2 = 0 + 8.75 Reorder the terms: -8.75 + 8.75 + 1.75x + x2 = 0 + 8.75 Combine like terms: -8.75 + 8.75 = 0.00 0.00 + 1.75x + x2 = 0 + 8.75 1.75x + x2 = 0 + 8.75 Combine like terms: 0 + 8.75 = 8.75 1.75x + x2 = 8.75 The x term is 1.75x. Take half its coefficient (0.875). Square it (0.765625) and add it to both sides. Add '0.765625' to each side of the equation. 1.75x + 0.765625 + x2 = 8.75 + 0.765625 Reorder the terms: 0.765625 + 1.75x + x2 = 8.75 + 0.765625 Combine like terms: 8.75 + 0.765625 = 9.515625 0.765625 + 1.75x + x2 = 9.515625 Factor a perfect square on the left side: (x + 0.875)(x + 0.875) = 9.515625 Calculate the square root of the right side: 3.08474067 Break this problem into two subproblems by setting (x + 0.875) equal to 3.08474067 and -3.08474067.Subproblem 1
x + 0.875 = 3.08474067 Simplifying x + 0.875 = 3.08474067 Reorder the terms: 0.875 + x = 3.08474067 Solving 0.875 + x = 3.08474067 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.875' to each side of the equation. 0.875 + -0.875 + x = 3.08474067 + -0.875 Combine like terms: 0.875 + -0.875 = 0.000 0.000 + x = 3.08474067 + -0.875 x = 3.08474067 + -0.875 Combine like terms: 3.08474067 + -0.875 = 2.20974067 x = 2.20974067 Simplifying x = 2.20974067Subproblem 2
x + 0.875 = -3.08474067 Simplifying x + 0.875 = -3.08474067 Reorder the terms: 0.875 + x = -3.08474067 Solving 0.875 + x = -3.08474067 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.875' to each side of the equation. 0.875 + -0.875 + x = -3.08474067 + -0.875 Combine like terms: 0.875 + -0.875 = 0.000 0.000 + x = -3.08474067 + -0.875 x = -3.08474067 + -0.875 Combine like terms: -3.08474067 + -0.875 = -3.95974067 x = -3.95974067 Simplifying x = -3.95974067Solution
The solution to the problem is based on the solutions from the subproblems. x = {2.20974067, -3.95974067}
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