Respuesta :
f(x)=3x²-x+2
g(x)=5x²-1
f(g(x))=3(5x²-1)²-(5x²-1)+2
=3(25x⁴-10x²+1)-(5x²-1)+2
=75x⁴-30x²+3-5x²+1+2
=75x⁴-35x²+6
Answer: f(g(x))=75x⁴-35x²+6
g(x)=5x²-1
f(g(x))=3(5x²-1)²-(5x²-1)+2
=3(25x⁴-10x²+1)-(5x²-1)+2
=75x⁴-30x²+3-5x²+1+2
=75x⁴-35x²+6
Answer: f(g(x))=75x⁴-35x²+6