(x-a)(x-b)=ab

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Solution for (x-a)(x-b)=ab equation:


Simplifying
(x + -1a)(x + -1b) = ab

Reorder the terms:
(-1a + x)(x + -1b) = ab

Reorder the terms:
(-1a + x)(-1b + x) = ab

Multiply (-1a + x) * (-1b + x)
(-1a * (-1b + x) + x(-1b + x)) = ab
((-1b * -1a + x * -1a) + x(-1b + x)) = ab
((1ab + -1ax) + x(-1b + x)) = ab
(1ab + -1ax + (-1b * x + x * x)) = ab
(1ab + -1ax + (-1bx + x2)) = ab
(1ab + -1ax + -1bx + x2) = ab

Solving
1ab + -1ax + -1bx + x2 = ab

Solving for variable 'a'.

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

Add '-1ab' to each side of the equation.
1ab + -1ax + -1bx + -1ab + x2 = ab + -1ab

Reorder the terms:
1ab + -1ab + -1ax + -1bx + x2 = ab + -1ab

Combine like terms: 1ab + -1ab = 0
0 + -1ax + -1bx + x2 = ab + -1ab
-1ax + -1bx + x2 = ab + -1ab

Combine like terms: ab + -1ab = 0
-1ax + -1bx + x2 = 0

Add 'bx' to each side of the equation.
-1ax + -1bx + bx + x2 = 0 + bx

Combine like terms: -1bx + bx = 0
-1ax + 0 + x2 = 0 + bx
-1ax + x2 = 0 + bx
Remove the zero:
-1ax + x2 = bx

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

Combine like terms: x2 + -1x2 = 0
-1ax + 0 = bx + -1x2
-1ax = bx + -1x2

Divide each side by '-1x'.
a = -1b + x

Simplifying
a = -1b + x

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