Asked by Elaine

(x+1)(x+3)=

Answers

Answered by bobpursley
FOIL
f: x^2
O: 3x
I: x
L: 3
add them
Answered by Piggy
(x + 1)(x + 3)
= x^2 + 3x + x + 3
= x^2 + 4x + 3
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