barajasnatally28 barajasnatally28 10-09-2020 Mathematics contestada If f(x) = x^2+x-3, then f(3a) = (a) 3a^2+3a-3 (b) a^2+3a-3 (c) 3a^2+3a+3 (d) 9a^2+3a-3 (e) 9a^2-3a+3
