(x+4)(x-a)=x^2+bx+8

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Solution for (x+4)(x-a)=x^2+bx+8 equation:


Simplifying
(x + 4)(x + -1a) = x2 + bx + 8

Reorder the terms:
(4 + x)(x + -1a) = x2 + bx + 8

Reorder the terms:
(4 + x)(-1a + x) = x2 + bx + 8

Multiply (4 + x) * (-1a + x)
(4(-1a + x) + x(-1a + x)) = x2 + bx + 8
((-1a * 4 + x * 4) + x(-1a + x)) = x2 + bx + 8
((-4a + 4x) + x(-1a + x)) = x2 + bx + 8
(-4a + 4x + (-1a * x + x * x)) = x2 + bx + 8
(-4a + 4x + (-1ax + x2)) = x2 + bx + 8

Reorder the terms:
(-4a + -1ax + 4x + x2) = x2 + bx + 8
(-4a + -1ax + 4x + x2) = x2 + bx + 8

Reorder the terms:
-4a + -1ax + 4x + x2 = 8 + bx + x2

Add '-1x2' to each side of the equation.
-4a + -1ax + 4x + x2 + -1x2 = 8 + bx + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-4a + -1ax + 4x + 0 = 8 + bx + x2 + -1x2
-4a + -1ax + 4x = 8 + bx + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-4a + -1ax + 4x = 8 + bx + 0
-4a + -1ax + 4x = 8 + bx

Solving
-4a + -1ax + 4x = 8 + bx

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 + -1ax + 4x + -4x = 8 + bx + -4x

Combine like terms: 4x + -4x = 0
-4a + -1ax + 0 = 8 + bx + -4x
-4a + -1ax = 8 + bx + -4x

Reorder the terms:
-8 + -4a + -1ax + -1bx + 4x = 8 + bx + -4x + -8 + -1bx + 4x

Reorder the terms:
-8 + -4a + -1ax + -1bx + 4x = 8 + -8 + bx + -1bx + -4x + 4x

Combine like terms: 8 + -8 = 0
-8 + -4a + -1ax + -1bx + 4x = 0 + bx + -1bx + -4x + 4x
-8 + -4a + -1ax + -1bx + 4x = bx + -1bx + -4x + 4x

Combine like terms: bx + -1bx = 0
-8 + -4a + -1ax + -1bx + 4x = 0 + -4x + 4x
-8 + -4a + -1ax + -1bx + 4x = -4x + 4x

Combine like terms: -4x + 4x = 0
-8 + -4a + -1ax + -1bx + 4x = 0

The solution to this equation could not be determined.

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