if g(x)=x-2x^2 what is 2(g(b)+1)
g(x)=x-2x^2 what is 2(g(b)+1)
g(b) + 1 = b - 2(b)^2 + 1
So
2 (g(b)+1) =
2 [ b - 2(b)^2 + 1 ] =
2b - 4b^2 + 2