F(x)=x²-2 fog(x)=4x²+4x-1 Tentukan rumus fungsi g(x)

subtitusi g(x) = m

f(m) = 4x²+4x-1

f(x) = x²-2

f(m) = m²-2  <= f(m) = 4x²+4x-1

4x²+4x-1 = m²-2

m² = 4x²+4x+1

m   =  +-√(4x²+4x+1)

g(x) = √(4x²+4x+1) atau -√(4x²+4x+1)