Y=(x+5)(x-5)

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Solution for Y=(x+5)(x-5) equation: 


Simplifying
Y = (x + 5)(x + -5)

Reorder the terms:
Y = (5 + x)(x + -5)

Reorder the terms:
Y = (5 + x)(-5 + x)

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

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

Solving
Y = -25 + x2

Solving for variable 'Y'.

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

Simplifying
Y = -25 + x2

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