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Simplifying 7x2 + 4x + -10 = 0 Reorder the terms: -10 + 4x + 7x2 = 0 Solving -10 + 4x + 7x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 7 the coefficient of the squared term: Divide each side by '7'. -1.428571429 + 0.5714285714x + x2 = 0 Move the constant term to the right: Add '1.428571429' to each side of the equation. -1.428571429 + 0.5714285714x + 1.428571429 + x2 = 0 + 1.428571429 Reorder the terms: -1.428571429 + 1.428571429 + 0.5714285714x + x2 = 0 + 1.428571429 Combine like terms: -1.428571429 + 1.428571429 = 0.000000000 0.000000000 + 0.5714285714x + x2 = 0 + 1.428571429 0.5714285714x + x2 = 0 + 1.428571429 Combine like terms: 0 + 1.428571429 = 1.428571429 0.5714285714x + x2 = 1.428571429 The x term is 0.5714285714x. Take half its coefficient (0.2857142857). Square it (0.08163265305) and add it to both sides. Add '0.08163265305' to each side of the equation. 0.5714285714x + 0.08163265305 + x2 = 1.428571429 + 0.08163265305 Reorder the terms: 0.08163265305 + 0.5714285714x + x2 = 1.428571429 + 0.08163265305 Combine like terms: 1.428571429 + 0.08163265305 = 1.51020408205 0.08163265305 + 0.5714285714x + x2 = 1.51020408205 Factor a perfect square on the left side: (x + 0.2857142857)(x + 0.2857142857) = 1.51020408205 Calculate the square root of the right side: 1.22890361 Break this problem into two subproblems by setting (x + 0.2857142857) equal to 1.22890361 and -1.22890361.Subproblem 1
x + 0.2857142857 = 1.22890361 Simplifying x + 0.2857142857 = 1.22890361 Reorder the terms: 0.2857142857 + x = 1.22890361 Solving 0.2857142857 + x = 1.22890361 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2857142857' to each side of the equation. 0.2857142857 + -0.2857142857 + x = 1.22890361 + -0.2857142857 Combine like terms: 0.2857142857 + -0.2857142857 = 0.0000000000 0.0000000000 + x = 1.22890361 + -0.2857142857 x = 1.22890361 + -0.2857142857 Combine like terms: 1.22890361 + -0.2857142857 = 0.9431893243 x = 0.9431893243 Simplifying x = 0.9431893243Subproblem 2
x + 0.2857142857 = -1.22890361 Simplifying x + 0.2857142857 = -1.22890361 Reorder the terms: 0.2857142857 + x = -1.22890361 Solving 0.2857142857 + x = -1.22890361 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2857142857' to each side of the equation. 0.2857142857 + -0.2857142857 + x = -1.22890361 + -0.2857142857 Combine like terms: 0.2857142857 + -0.2857142857 = 0.0000000000 0.0000000000 + x = -1.22890361 + -0.2857142857 x = -1.22890361 + -0.2857142857 Combine like terms: -1.22890361 + -0.2857142857 = -1.5146178957 x = -1.5146178957 Simplifying x = -1.5146178957Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.9431893243, -1.5146178957}
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