y=(x+1)(2x+7)

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Solution for y=(x+1)(2x+7) equation: 


Simplifying
y = (x + 1)(2x + 7)

Reorder the terms:
y = (1 + x)(2x + 7)

Reorder the terms:
y = (1 + x)(7 + 2x)

Multiply (1 + x) * (7 + 2x)
y = (1(7 + 2x) + x(7 + 2x))
y = ((7 * 1 + 2x * 1) + x(7 + 2x))
y = ((7 + 2x) + x(7 + 2x))
y = (7 + 2x + (7 * x + 2x * x))
y = (7 + 2x + (7x + 2x2))

Combine like terms: 2x + 7x = 9x
y = (7 + 9x + 2x2)

Solving
y = 7 + 9x + 2x2

Solving for variable 'y'.

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

Simplifying
y = 7 + 9x + 2x2

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