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the quadratic function f(x)=x2+2x-1 is expressed as
A. F(x)=(x+1)2+1
B. F(x)=(x+1) 2-1
C. F(x)=3x2+12x+10
D. F(x)=-3x2-12x-10​


Sagot :

Answer:

B

Step-by-step explanation:

(x+1)(x+1)-1

x2+1x+1x-1

=x2+2x-1