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

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


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

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

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

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

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

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

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

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

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

Solving
12 + -7x = 4

Solving for variable 'x'.

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

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

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

Combine like terms: 4 + -12 = -8
-7x = -8

Divide each side by '-7'.
x = 1.142857143

Simplifying
x = 1.142857143

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