x^2-9=(x+c)(x+d)

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Solution for x^2-9=(x+c)(x+d) equation:


Simplifying
x2 + -9 = (x + c)(x + d)

Reorder the terms:
-9 + x2 = (x + c)(x + d)

Reorder the terms:
-9 + x2 = (c + x)(x + d)

Reorder the terms:
-9 + x2 = (c + x)(d + x)

Multiply (c + x) * (d + x)
-9 + x2 = (c(d + x) + x(d + x))
-9 + x2 = ((d * c + x * c) + x(d + x))
-9 + x2 = ((cd + cx) + x(d + x))
-9 + x2 = (cd + cx + (d * x + x * x))
-9 + x2 = (cd + cx + (dx + x2))
-9 + x2 = (cd + cx + dx + x2)

Add '-1x2' to each side of the equation.
-9 + x2 + -1x2 = cd + cx + dx + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-9 + 0 = cd + cx + dx + x2 + -1x2
-9 = cd + cx + dx + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-9 = cd + cx + dx + 0
-9 = cd + cx + dx

Solving
-9 = cd + cx + dx

Solving for variable 'c'.

Move all terms containing c to the left, all other terms to the right.

Add '-1cd' to each side of the equation.
-9 + -1cd = cd + cx + -1cd + dx

Reorder the terms:
-9 + -1cd = cd + -1cd + cx + dx

Combine like terms: cd + -1cd = 0
-9 + -1cd = 0 + cx + dx
-9 + -1cd = cx + dx

Add '-1cx' to each side of the equation.
-9 + -1cd + -1cx = cx + -1cx + dx

Combine like terms: cx + -1cx = 0
-9 + -1cd + -1cx = 0 + dx
-9 + -1cd + -1cx = dx

Add '9' to each side of the equation.
-9 + -1cd + 9 + -1cx = 9 + dx

Reorder the terms:
-9 + 9 + -1cd + -1cx = 9 + dx

Combine like terms: -9 + 9 = 0
0 + -1cd + -1cx = 9 + dx
-1cd + -1cx = 9 + dx

Reorder the terms:
-9 + -1cd + -1cx + -1dx = 9 + dx + -9 + -1dx

Reorder the terms:
-9 + -1cd + -1cx + -1dx = 9 + -9 + dx + -1dx

Combine like terms: 9 + -9 = 0
-9 + -1cd + -1cx + -1dx = 0 + dx + -1dx
-9 + -1cd + -1cx + -1dx = dx + -1dx

Combine like terms: dx + -1dx = 0
-9 + -1cd + -1cx + -1dx = 0

Factor out the Greatest Common Factor (GCF), '-1'.
-1(9 + cd + cx + dx) = 0

Ignore the factor -1.

Subproblem 1

Set the factor '(9 + cd + cx + dx)' equal to zero and attempt to solve: Simplifying 9 + cd + cx + dx = 0 Solving 9 + cd + cx + dx = 0 Move all terms containing c to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + cd + cx + -9 + dx = 0 + -9 Reorder the terms: 9 + -9 + cd + cx + dx = 0 + -9 Combine like terms: 9 + -9 = 0 0 + cd + cx + dx = 0 + -9 cd + cx + dx = 0 + -9 Combine like terms: 0 + -9 = -9 cd + cx + dx = -9 Add '-1dx' to each side of the equation. cd + cx + dx + -1dx = -9 + -1dx Combine like terms: dx + -1dx = 0 cd + cx + 0 = -9 + -1dx cd + cx = -9 + -1dx The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.

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