bantu saya dong paket cara ya pls

1.a.f(x)=2x²+x+13
f(2)=2(2)²+2+13
= 4² + 15
= 8 +15
= 23

b.f(-2)=2x²+x+13
f(-2)=2(-2)²+x+13
= -4² +-4+13
= -8 -4+13
= -8 + 9
= 1
c.f(0+1)=2x²+x+13
f(1) =2(1)²+1+13
=2² +14
=4 +14
=18
maaf:'( jika salah..