(x-3)(x+5)=x^2+5x+6

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Solution for (x-3)(x+5)=x^2+5x+6 equation:


Simplifying
(x + -3)(x + 5) = x2 + 5x + 6

Reorder the terms:
(-3 + x)(x + 5) = x2 + 5x + 6

Reorder the terms:
(-3 + x)(5 + x) = x2 + 5x + 6

Multiply (-3 + x) * (5 + x)
(-3(5 + x) + x(5 + x)) = x2 + 5x + 6
((5 * -3 + x * -3) + x(5 + x)) = x2 + 5x + 6
((-15 + -3x) + x(5 + x)) = x2 + 5x + 6
(-15 + -3x + (5 * x + x * x)) = x2 + 5x + 6
(-15 + -3x + (5x + x2)) = x2 + 5x + 6

Combine like terms: -3x + 5x = 2x
(-15 + 2x + x2) = x2 + 5x + 6

Reorder the terms:
-15 + 2x + x2 = 6 + 5x + x2

Add '-1x2' to each side of the equation.
-15 + 2x + x2 + -1x2 = 6 + 5x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-15 + 2x + 0 = 6 + 5x + x2 + -1x2
-15 + 2x = 6 + 5x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-15 + 2x = 6 + 5x + 0
-15 + 2x = 6 + 5x

Solving
-15 + 2x = 6 + 5x

Solving for variable 'x'.

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

Add '-5x' to each side of the equation.
-15 + 2x + -5x = 6 + 5x + -5x

Combine like terms: 2x + -5x = -3x
-15 + -3x = 6 + 5x + -5x

Combine like terms: 5x + -5x = 0
-15 + -3x = 6 + 0
-15 + -3x = 6

Add '15' to each side of the equation.
-15 + 15 + -3x = 6 + 15

Combine like terms: -15 + 15 = 0
0 + -3x = 6 + 15
-3x = 6 + 15

Combine like terms: 6 + 15 = 21
-3x = 21

Divide each side by '-3'.
x = -7

Simplifying
x = -7

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