(x+2)(x-5)=x^2-6x-7

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Solution for (x+2)(x-5)=x^2-6x-7 equation:


Simplifying
(x + 2)(x + -5) = x2 + -6x + -7

Reorder the terms:
(2 + x)(x + -5) = x2 + -6x + -7

Reorder the terms:
(2 + x)(-5 + x) = x2 + -6x + -7

Multiply (2 + x) * (-5 + x)
(2(-5 + x) + x(-5 + x)) = x2 + -6x + -7
((-5 * 2 + x * 2) + x(-5 + x)) = x2 + -6x + -7
((-10 + 2x) + x(-5 + x)) = x2 + -6x + -7
(-10 + 2x + (-5 * x + x * x)) = x2 + -6x + -7
(-10 + 2x + (-5x + x2)) = x2 + -6x + -7

Combine like terms: 2x + -5x = -3x
(-10 + -3x + x2) = x2 + -6x + -7

Reorder the terms:
-10 + -3x + x2 = -7 + -6x + x2

Add '-1x2' to each side of the equation.
-10 + -3x + x2 + -1x2 = -7 + -6x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-10 + -3x + 0 = -7 + -6x + x2 + -1x2
-10 + -3x = -7 + -6x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-10 + -3x = -7 + -6x + 0
-10 + -3x = -7 + -6x

Solving
-10 + -3x = -7 + -6x

Solving for variable 'x'.

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

Add '6x' to each side of the equation.
-10 + -3x + 6x = -7 + -6x + 6x

Combine like terms: -3x + 6x = 3x
-10 + 3x = -7 + -6x + 6x

Combine like terms: -6x + 6x = 0
-10 + 3x = -7 + 0
-10 + 3x = -7

Add '10' to each side of the equation.
-10 + 10 + 3x = -7 + 10

Combine like terms: -10 + 10 = 0
0 + 3x = -7 + 10
3x = -7 + 10

Combine like terms: -7 + 10 = 3
3x = 3

Divide each side by '3'.
x = 1

Simplifying
x = 1

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