(x+3)(x+3)=(7x+1)(x-1)

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Solution for (x+3)(x+3)=(7x+1)(x-1) equation:


Simplifying
(x + 3)(x + 3) = (7x + 1)(x + -1)

Reorder the terms:
(3 + x)(x + 3) = (7x + 1)(x + -1)

Reorder the terms:
(3 + x)(3 + x) = (7x + 1)(x + -1)

Multiply (3 + x) * (3 + x)
(3(3 + x) + x(3 + x)) = (7x + 1)(x + -1)
((3 * 3 + x * 3) + x(3 + x)) = (7x + 1)(x + -1)
((9 + 3x) + x(3 + x)) = (7x + 1)(x + -1)
(9 + 3x + (3 * x + x * x)) = (7x + 1)(x + -1)
(9 + 3x + (3x + x2)) = (7x + 1)(x + -1)

Combine like terms: 3x + 3x = 6x
(9 + 6x + x2) = (7x + 1)(x + -1)

Reorder the terms:
9 + 6x + x2 = (1 + 7x)(x + -1)

Reorder the terms:
9 + 6x + x2 = (1 + 7x)(-1 + x)

Multiply (1 + 7x) * (-1 + x)
9 + 6x + x2 = (1(-1 + x) + 7x * (-1 + x))
9 + 6x + x2 = ((-1 * 1 + x * 1) + 7x * (-1 + x))
9 + 6x + x2 = ((-1 + 1x) + 7x * (-1 + x))
9 + 6x + x2 = (-1 + 1x + (-1 * 7x + x * 7x))
9 + 6x + x2 = (-1 + 1x + (-7x + 7x2))

Combine like terms: 1x + -7x = -6x
9 + 6x + x2 = (-1 + -6x + 7x2)

Solving
9 + 6x + x2 = -1 + -6x + 7x2

Solving for variable 'x'.

Reorder the terms:
9 + 1 + 6x + 6x + x2 + -7x2 = -1 + -6x + 7x2 + 1 + 6x + -7x2

Combine like terms: 9 + 1 = 10
10 + 6x + 6x + x2 + -7x2 = -1 + -6x + 7x2 + 1 + 6x + -7x2

Combine like terms: 6x + 6x = 12x
10 + 12x + x2 + -7x2 = -1 + -6x + 7x2 + 1 + 6x + -7x2

Combine like terms: x2 + -7x2 = -6x2
10 + 12x + -6x2 = -1 + -6x + 7x2 + 1 + 6x + -7x2

Reorder the terms:
10 + 12x + -6x2 = -1 + 1 + -6x + 6x + 7x2 + -7x2

Combine like terms: -1 + 1 = 0
10 + 12x + -6x2 = 0 + -6x + 6x + 7x2 + -7x2
10 + 12x + -6x2 = -6x + 6x + 7x2 + -7x2

Combine like terms: -6x + 6x = 0
10 + 12x + -6x2 = 0 + 7x2 + -7x2
10 + 12x + -6x2 = 7x2 + -7x2

Combine like terms: 7x2 + -7x2 = 0
10 + 12x + -6x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(5 + 6x + -3x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(5 + 6x + -3x2)' equal to zero and attempt to solve: Simplifying 5 + 6x + -3x2 = 0 Solving 5 + 6x + -3x2 = 0 Begin completing the square. Divide all terms by -3 the coefficient of the squared term: Divide each side by '-3'. -1.666666667 + -2x + x2 = 0 Move the constant term to the right: Add '1.666666667' to each side of the equation. -1.666666667 + -2x + 1.666666667 + x2 = 0 + 1.666666667 Reorder the terms: -1.666666667 + 1.666666667 + -2x + x2 = 0 + 1.666666667 Combine like terms: -1.666666667 + 1.666666667 = 0.000000000 0.000000000 + -2x + x2 = 0 + 1.666666667 -2x + x2 = 0 + 1.666666667 Combine like terms: 0 + 1.666666667 = 1.666666667 -2x + x2 = 1.666666667 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 = 1.666666667 + 1 Reorder the terms: 1 + -2x + x2 = 1.666666667 + 1 Combine like terms: 1.666666667 + 1 = 2.666666667 1 + -2x + x2 = 2.666666667 Factor a perfect square on the left side: (x + -1)(x + -1) = 2.666666667 Calculate the square root of the right side: 1.632993162 Break this problem into two subproblems by setting (x + -1) equal to 1.632993162 and -1.632993162.

Subproblem 1

x + -1 = 1.632993162 Simplifying x + -1 = 1.632993162 Reorder the terms: -1 + x = 1.632993162 Solving -1 + x = 1.632993162 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 = 1.632993162 + 1 Combine like terms: -1 + 1 = 0 0 + x = 1.632993162 + 1 x = 1.632993162 + 1 Combine like terms: 1.632993162 + 1 = 2.632993162 x = 2.632993162 Simplifying x = 2.632993162

Subproblem 2

x + -1 = -1.632993162 Simplifying x + -1 = -1.632993162 Reorder the terms: -1 + x = -1.632993162 Solving -1 + x = -1.632993162 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 = -1.632993162 + 1 Combine like terms: -1 + 1 = 0 0 + x = -1.632993162 + 1 x = -1.632993162 + 1 Combine like terms: -1.632993162 + 1 = -0.632993162 x = -0.632993162 Simplifying x = -0.632993162

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.632993162, -0.632993162}

Solution

x = {2.632993162, -0.632993162}

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