y=(x+3)(x+6)

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Solution for y=(x+3)(x+6) equation: 


Simplifying
y = (x + 3)(x + 6)

Reorder the terms:
y = (3 + x)(x + 6)

Reorder the terms:
y = (3 + x)(6 + x)

Multiply (3 + x) * (6 + x)
y = (3(6 + x) + x(6 + x))
y = ((6 * 3 + x * 3) + x(6 + x))
y = ((18 + 3x) + x(6 + x))
y = (18 + 3x + (6 * x + x * x))
y = (18 + 3x + (6x + x2))

Combine like terms: 3x + 6x = 9x
y = (18 + 9x + x2)

Solving
y = 18 + 9x + x2

Solving for variable 'y'.

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

Simplifying
y = 18 + 9x + x2

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