(x+2)(x+7)+k=0

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Solution for (x+2)(x+7)+k=0 equation:


Simplifying
(x + 2)(x + 7) + k = 0

Reorder the terms:
(2 + x)(x + 7) + k = 0

Reorder the terms:
(2 + x)(7 + x) + k = 0

Multiply (2 + x) * (7 + x)
(2(7 + x) + x(7 + x)) + k = 0
((7 * 2 + x * 2) + x(7 + x)) + k = 0
((14 + 2x) + x(7 + x)) + k = 0
(14 + 2x + (7 * x + x * x)) + k = 0
(14 + 2x + (7x + x2)) + k = 0

Combine like terms: 2x + 7x = 9x
(14 + 9x + x2) + k = 0

Reorder the terms:
14 + k + 9x + x2 = 0

Solving
14 + k + 9x + x2 = 0

Solving for variable 'k'.

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

Add '-14' to each side of the equation.
14 + k + 9x + -14 + x2 = 0 + -14

Reorder the terms:
14 + -14 + k + 9x + x2 = 0 + -14

Combine like terms: 14 + -14 = 0
0 + k + 9x + x2 = 0 + -14
k + 9x + x2 = 0 + -14

Combine like terms: 0 + -14 = -14
k + 9x + x2 = -14

Add '-9x' to each side of the equation.
k + 9x + -9x + x2 = -14 + -9x

Combine like terms: 9x + -9x = 0
k + 0 + x2 = -14 + -9x
k + x2 = -14 + -9x

Add '-1x2' to each side of the equation.
k + x2 + -1x2 = -14 + -9x + -1x2

Combine like terms: x2 + -1x2 = 0
k + 0 = -14 + -9x + -1x2
k = -14 + -9x + -1x2

Simplifying
k = -14 + -9x + -1x2

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