E
Editor
Sep 18, 2022
If f(x)=2x+1 and $g(x)=x^{2}-1$ then gf=
Difficulty: Easy
A:
$(2x+1)^{2}$
B:
2x
C:
$2(x^{2}-1)$
D:
$4x^{2}+4x$
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ID: 63273db8ca83163ac3a106e3