F(x)=xsquare - 1,g(x)=x-2,find a,if gof(a)=1

Dear student,fx=x2-1gx=x-2gof=gfx     =x2-1-2      gof=x2-3gofa=a2-3=1a2-3=1a2=1+3=4 a2=4 a=±2Regards        

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