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

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


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

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

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

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

Combine like terms: 3x + 4x = 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 '-7x' to each side of the equation.
7x + -7x + x2 = 7x + -7x + x2

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

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

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

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

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

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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