Raizx=16+((x-4)*(x+4))

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Solution for Raizx=16+((x-4)*(x+4)) equation: 


Simplifying
Raizx = 16 + ((x + -4)(x + 4))

Reorder the terms:
aixzR = 16 + ((-4 + x)(x + 4))

Reorder the terms:
aixzR = 16 + ((-4 + x)(4 + x))

Multiply (-4 + x) * (4 + x)
aixzR = 16 + ((-4(4 + x) + x(4 + x)))
aixzR = 16 + (((4 * -4 + x * -4) + x(4 + x)))
aixzR = 16 + (((-16 + -4x) + x(4 + x)))
aixzR = 16 + ((-16 + -4x + (4 * x + x * x)))
aixzR = 16 + ((-16 + -4x + (4x + x2)))

Combine like terms: -4x + 4x = 0
aixzR = 16 + ((-16 + 0 + x2))
aixzR = 16 + ((-16 + x2))
aixzR = 16 + (-16 + x2)

Remove parenthesis around (-16 + x2)
aixzR = 16 + -16 + x2

Combine like terms: 16 + -16 = 0
aixzR = 0 + x2
aixzR = x2

Solving
aixzR = x2

Solving for variable 'a'.

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

Divide each side by 'ixzR'.
a = i-1xz-1R-1

Simplifying
a = i-1xz-1R-1

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