(x-7)(x-5)=x^2-12x+d

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Solution for (x-7)(x-5)=x^2-12x+d equation:


Simplifying
(x + -7)(x + -5) = x2 + -12x + d

Reorder the terms:
(-7 + x)(x + -5) = x2 + -12x + d

Reorder the terms:
(-7 + x)(-5 + x) = x2 + -12x + d

Multiply (-7 + x) * (-5 + x)
(-7(-5 + x) + x(-5 + x)) = x2 + -12x + d
((-5 * -7 + x * -7) + x(-5 + x)) = x2 + -12x + d
((35 + -7x) + x(-5 + x)) = x2 + -12x + d
(35 + -7x + (-5 * x + x * x)) = x2 + -12x + d
(35 + -7x + (-5x + x2)) = x2 + -12x + d

Combine like terms: -7x + -5x = -12x
(35 + -12x + x2) = x2 + -12x + d

Reorder the terms:
35 + -12x + x2 = d + -12x + x2

Add '12x' to each side of the equation.
35 + -12x + 12x + x2 = d + -12x + 12x + x2

Combine like terms: -12x + 12x = 0
35 + 0 + x2 = d + -12x + 12x + x2
35 + x2 = d + -12x + 12x + x2

Combine like terms: -12x + 12x = 0
35 + x2 = d + 0 + x2
35 + x2 = d + x2

Add '-1x2' to each side of the equation.
35 + x2 + -1x2 = d + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
35 + 0 = d + x2 + -1x2
35 = d + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
35 = d + 0
35 = d

Solving
35 = d

Solving for variable 'd'.

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

Add '-1d' to each side of the equation.
35 + -1d = d + -1d

Combine like terms: d + -1d = 0
35 + -1d = 0

Add '-35' to each side of the equation.
35 + -35 + -1d = 0 + -35

Combine like terms: 35 + -35 = 0
0 + -1d = 0 + -35
-1d = 0 + -35

Combine like terms: 0 + -35 = -35
-1d = -35

Divide each side by '-1'.
d = 35

Simplifying
d = 35

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