y=(x+k)(x+k)

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Solution for y=(x+k)(x+k) equation: 


Simplifying
y = (x + k)(x + k)

Reorder the terms:
y = (k + x)(x + k)

Reorder the terms:
y = (k + x)(k + x)

Multiply (k + x) * (k + x)
y = (k(k + x) + x(k + x))
y = ((k * k + x * k) + x(k + x))

Reorder the terms:
y = ((kx + k2) + x(k + x))
y = ((kx + k2) + x(k + x))
y = (kx + k2 + (k * x + x * x))
y = (kx + k2 + (kx + x2))

Reorder the terms:
y = (kx + kx + k2 + x2)

Combine like terms: kx + kx = 2kx
y = (2kx + k2 + x2)

Solving
y = 2kx + k2 + x2

Solving for variable 'y'.

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

Simplifying
y = 2kx + k2 + x2

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