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Simplifying 5(x + 3) * 2x = 7(x + 4) + -2 Reorder the terms: 5(3 + x) * 2x = 7(x + 4) + -2 Reorder the terms for easier multiplication: 5 * 2x(3 + x) = 7(x + 4) + -2 Multiply 5 * 2 10x(3 + x) = 7(x + 4) + -2 (3 * 10x + x * 10x) = 7(x + 4) + -2 (30x + 10x2) = 7(x + 4) + -2 Reorder the terms: 30x + 10x2 = 7(4 + x) + -2 30x + 10x2 = (4 * 7 + x * 7) + -2 30x + 10x2 = (28 + 7x) + -2 Reorder the terms: 30x + 10x2 = 28 + -2 + 7x Combine like terms: 28 + -2 = 26 30x + 10x2 = 26 + 7x Solving 30x + 10x2 = 26 + 7x Solving for variable 'x'. Reorder the terms: -26 + 30x + -7x + 10x2 = 26 + 7x + -26 + -7x Combine like terms: 30x + -7x = 23x -26 + 23x + 10x2 = 26 + 7x + -26 + -7x Reorder the terms: -26 + 23x + 10x2 = 26 + -26 + 7x + -7x Combine like terms: 26 + -26 = 0 -26 + 23x + 10x2 = 0 + 7x + -7x -26 + 23x + 10x2 = 7x + -7x Combine like terms: 7x + -7x = 0 -26 + 23x + 10x2 = 0 Begin completing the square. Divide all terms by 10 the coefficient of the squared term: Divide each side by '10'. -2.6 + 2.3x + x2 = 0.0 Move the constant term to the right: Add '2.6' to each side of the equation. -2.6 + 2.3x + 2.6 + x2 = 0.0 + 2.6 Reorder the terms: -2.6 + 2.6 + 2.3x + x2 = 0.0 + 2.6 Combine like terms: -2.6 + 2.6 = 0.0 0.0 + 2.3x + x2 = 0.0 + 2.6 2.3x + x2 = 0.0 + 2.6 Combine like terms: 0.0 + 2.6 = 2.6 2.3x + x2 = 2.6 The x term is 2.3x. Take half its coefficient (1.15). Square it (1.3225) and add it to both sides. Add '1.3225' to each side of the equation. 2.3x + 1.3225 + x2 = 2.6 + 1.3225 Reorder the terms: 1.3225 + 2.3x + x2 = 2.6 + 1.3225 Combine like terms: 2.6 + 1.3225 = 3.9225 1.3225 + 2.3x + x2 = 3.9225 Factor a perfect square on the left side: (x + 1.15)(x + 1.15) = 3.9225 Calculate the square root of the right side: 1.980530232 Break this problem into two subproblems by setting (x + 1.15) equal to 1.980530232 and -1.980530232.Subproblem 1
x + 1.15 = 1.980530232 Simplifying x + 1.15 = 1.980530232 Reorder the terms: 1.15 + x = 1.980530232 Solving 1.15 + x = 1.980530232 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.15' to each side of the equation. 1.15 + -1.15 + x = 1.980530232 + -1.15 Combine like terms: 1.15 + -1.15 = 0.00 0.00 + x = 1.980530232 + -1.15 x = 1.980530232 + -1.15 Combine like terms: 1.980530232 + -1.15 = 0.830530232 x = 0.830530232 Simplifying x = 0.830530232Subproblem 2
x + 1.15 = -1.980530232 Simplifying x + 1.15 = -1.980530232 Reorder the terms: 1.15 + x = -1.980530232 Solving 1.15 + x = -1.980530232 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.15' to each side of the equation. 1.15 + -1.15 + x = -1.980530232 + -1.15 Combine like terms: 1.15 + -1.15 = 0.00 0.00 + x = -1.980530232 + -1.15 x = -1.980530232 + -1.15 Combine like terms: -1.980530232 + -1.15 = -3.130530232 x = -3.130530232 Simplifying x = -3.130530232Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.830530232, -3.130530232}
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