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Simplifying (7x + 7)(3x + 3) + -63 = 0 Reorder the terms: (7 + 7x)(3x + 3) + -63 = 0 Reorder the terms: (7 + 7x)(3 + 3x) + -63 = 0 Multiply (7 + 7x) * (3 + 3x) (7(3 + 3x) + 7x * (3 + 3x)) + -63 = 0 ((3 * 7 + 3x * 7) + 7x * (3 + 3x)) + -63 = 0 ((21 + 21x) + 7x * (3 + 3x)) + -63 = 0 (21 + 21x + (3 * 7x + 3x * 7x)) + -63 = 0 (21 + 21x + (21x + 21x2)) + -63 = 0 Combine like terms: 21x + 21x = 42x (21 + 42x + 21x2) + -63 = 0 Reorder the terms: 21 + -63 + 42x + 21x2 = 0 Combine like terms: 21 + -63 = -42 -42 + 42x + 21x2 = 0 Solving -42 + 42x + 21x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '21'. 21(-2 + 2x + x2) = 0 Ignore the factor 21.Subproblem 1
Set the factor '(-2 + 2x + x2)' equal to zero and attempt to solve: Simplifying -2 + 2x + x2 = 0 Solving -2 + 2x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '2' to each side of the equation. -2 + 2x + 2 + x2 = 0 + 2 Reorder the terms: -2 + 2 + 2x + x2 = 0 + 2 Combine like terms: -2 + 2 = 0 0 + 2x + x2 = 0 + 2 2x + x2 = 0 + 2 Combine like terms: 0 + 2 = 2 2x + x2 = 2 The x term is 2x. Take half its coefficient (1). Square it (1) and add it to both sides. Add '1' to each side of the equation. 2x + 1 + x2 = 2 + 1 Reorder the terms: 1 + 2x + x2 = 2 + 1 Combine like terms: 2 + 1 = 3 1 + 2x + x2 = 3 Factor a perfect square on the left side: (x + 1)(x + 1) = 3 Calculate the square root of the right side: 1.732050808 Break this problem into two subproblems by setting (x + 1) equal to 1.732050808 and -1.732050808.Subproblem 1
x + 1 = 1.732050808 Simplifying x + 1 = 1.732050808 Reorder the terms: 1 + x = 1.732050808 Solving 1 + x = 1.732050808 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 1.732050808 + -1 Combine like terms: 1 + -1 = 0 0 + x = 1.732050808 + -1 x = 1.732050808 + -1 Combine like terms: 1.732050808 + -1 = 0.732050808 x = 0.732050808 Simplifying x = 0.732050808Subproblem 2
x + 1 = -1.732050808 Simplifying x + 1 = -1.732050808 Reorder the terms: 1 + x = -1.732050808 Solving 1 + x = -1.732050808 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -1.732050808 + -1 Combine like terms: 1 + -1 = 0 0 + x = -1.732050808 + -1 x = -1.732050808 + -1 Combine like terms: -1.732050808 + -1 = -2.732050808 x = -2.732050808 Simplifying x = -2.732050808Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.732050808, -2.732050808}Solution
x = {0.732050808, -2.732050808}
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