find the foil method (x+1) (x+3) show solution grade 7
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Answer:
ANSWER
(x+1) (x+3)
=x² + 4x + 3
SOLUTION
((x) + (1)) ((x)
+ (3)) = (x) (x)
first
+ (x) (3)
outer
+ (1) (x)
inner
+ (1) (3) = x²
last
+ 3x + x + 3
= x² + 4x + 3