ehaag20
ehaag20
13-03-2018
Mathematics
contestada
help please 40 points per question
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AnimeBrainly
AnimeBrainly
13-03-2018
Use FOIL (First, Outside, Inside, Last)
x(x) = x²
x(9) = 9x
-2(x) = -2x
-2(9) = -18
x² + 9x - 2x - 18
simplify by combining like terms
x² + 9x - 2x - 18
x² + 7x - 18
x² + 7x - 18
is your answer
hope this helps
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