Please Jawab pake cara, nanti siapa cepat bakalan saya kasih pulsa serius, pake cara biar saya ngerti!

1. f(x) = 3x² - 2x + 4
f(-2) = 3.-2² -2.-2 + 4
= 3.4 + 4 + 4
= 12 + 4 + 4
= 20

2. p(x) = 4x - 6
p(a) = 4.a - 6 = 0
= 4a - 6 = 0
= 4a = 0 + 6
=4a = 6
= a = 6/4
= a = 3/2

3. f(x) = 2
f(2016) = 2