(x-5)(x+5)=x^2-100x

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Solution for (x-5)(x+5)=x^2-100x equation:


Simplifying
(x + -5)(x + 5) = x2 + -100x

Reorder the terms:
(-5 + x)(x + 5) = x2 + -100x

Reorder the terms:
(-5 + x)(5 + x) = x2 + -100x

Multiply (-5 + x) * (5 + x)
(-5(5 + x) + x(5 + x)) = x2 + -100x
((5 * -5 + x * -5) + x(5 + x)) = x2 + -100x
((-25 + -5x) + x(5 + x)) = x2 + -100x
(-25 + -5x + (5 * x + x * x)) = x2 + -100x
(-25 + -5x + (5x + x2)) = x2 + -100x

Combine like terms: -5x + 5x = 0
(-25 + 0 + x2) = x2 + -100x
(-25 + x2) = x2 + -100x

Reorder the terms:
-25 + x2 = -100x + x2

Add '-1x2' to each side of the equation.
-25 + x2 + -1x2 = -100x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-25 + 0 = -100x + x2 + -1x2
-25 = -100x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-25 = -100x + 0
-25 = -100x

Solving
-25 = -100x

Solving for variable 'x'.

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

Add '100x' to each side of the equation.
-25 + 100x = -100x + 100x

Combine like terms: -100x + 100x = 0
-25 + 100x = 0

Add '25' to each side of the equation.
-25 + 25 + 100x = 0 + 25

Combine like terms: -25 + 25 = 0
0 + 100x = 0 + 25
100x = 0 + 25

Combine like terms: 0 + 25 = 25
100x = 25

Divide each side by '100'.
x = 0.25

Simplifying
x = 0.25

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