(x-4)(x-3)=x^2+7x+12

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Solution for (x-4)(x-3)=x^2+7x+12 equation:


Simplifying
(x + -4)(x + -3) = x2 + 7x + 12

Reorder the terms:
(-4 + x)(x + -3) = x2 + 7x + 12

Reorder the terms:
(-4 + x)(-3 + x) = x2 + 7x + 12

Multiply (-4 + x) * (-3 + x)
(-4(-3 + x) + x(-3 + x)) = x2 + 7x + 12
((-3 * -4 + x * -4) + x(-3 + x)) = x2 + 7x + 12
((12 + -4x) + x(-3 + x)) = x2 + 7x + 12
(12 + -4x + (-3 * x + x * x)) = x2 + 7x + 12
(12 + -4x + (-3x + x2)) = x2 + 7x + 12

Combine like terms: -4x + -3x = -7x
(12 + -7x + x2) = x2 + 7x + 12

Reorder the terms:
12 + -7x + x2 = 12 + 7x + x2

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

Reorder the terms:
12 + -12 + -7x + x2 = 12 + 7x + -12 + x2

Combine like terms: 12 + -12 = 0
0 + -7x + x2 = 12 + 7x + -12 + x2
-7x + x2 = 12 + 7x + -12 + x2

Reorder the terms:
-7x + x2 = 12 + -12 + 7x + x2

Combine like terms: 12 + -12 = 0
-7x + x2 = 0 + 7x + x2
-7x + x2 = 7x + x2

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

Combine like terms: x2 + -1x2 = 0
-7x + 0 = 7x + x2 + -1x2
-7x = 7x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-7x = 7x + 0
-7x = 7x

Solving
-7x = 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
-7x + -7x = 7x + -7x

Combine like terms: -7x + -7x = -14x
-14x = 7x + -7x

Combine like terms: 7x + -7x = 0
-14x = 0

Divide each side by '-14'.
x = 0

Simplifying
x = 0

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