(x+4)(x+a)=x^2+7x+12

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Solution for (x+4)(x+a)=x^2+7x+12 equation:


Simplifying
(x + 4)(x + a) = x2 + 7x + 12

Reorder the terms:
(4 + x)(x + a) = x2 + 7x + 12

Reorder the terms:
(4 + x)(a + x) = x2 + 7x + 12

Multiply (4 + x) * (a + x)
(4(a + x) + x(a + x)) = x2 + 7x + 12
((a * 4 + x * 4) + x(a + x)) = x2 + 7x + 12
((4a + 4x) + x(a + x)) = x2 + 7x + 12
(4a + 4x + (a * x + x * x)) = x2 + 7x + 12
(4a + 4x + (ax + x2)) = x2 + 7x + 12

Reorder the terms:
(4a + ax + 4x + x2) = x2 + 7x + 12
(4a + ax + 4x + x2) = x2 + 7x + 12

Reorder the terms:
4a + ax + 4x + x2 = 12 + 7x + x2

Add '-1x2' to each side of the equation.
4a + ax + 4x + x2 + -1x2 = 12 + 7x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
4a + ax + 4x + 0 = 12 + 7x + x2 + -1x2
4a + ax + 4x = 12 + 7x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
4a + ax + 4x = 12 + 7x + 0
4a + ax + 4x = 12 + 7x

Solving
4a + ax + 4x = 12 + 7x

Solving for variable 'a'.

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

Add '-4x' to each side of the equation.
4a + ax + 4x + -4x = 12 + 7x + -4x

Combine like terms: 4x + -4x = 0
4a + ax + 0 = 12 + 7x + -4x
4a + ax = 12 + 7x + -4x

Combine like terms: 7x + -4x = 3x
4a + ax = 12 + 3x

Reorder the terms:
-12 + 4a + ax + -3x = 12 + 3x + -12 + -3x

Reorder the terms:
-12 + 4a + ax + -3x = 12 + -12 + 3x + -3x

Combine like terms: 12 + -12 = 0
-12 + 4a + ax + -3x = 0 + 3x + -3x
-12 + 4a + ax + -3x = 3x + -3x

Combine like terms: 3x + -3x = 0
-12 + 4a + ax + -3x = 0

The solution to this equation could not be determined.

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