i would say 2x+7 or 7+2x
= x + 4x + 12
= 5x + 12
x + 4 (x + 3)
This is not a FOIL situation.
You must first clear the parentheses.
4 times x = 4x
4 times 3 = 12
We now have:
x + 4x + 12
Combine like terms is our next step.
x + 4x = 5x
5x + 12
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