Question

Dada a função f(×)=3ײ+2×-4, determine:

a) f(-2)
b) f(3)
ME AJUDEM POR FAVOR!!!!

Answer 1

f(-2)= 3×(-2)²+2×(-2)-4
f(-2) 3×4+2×4-4
f(-2) 12+8-4
f(-2) 20-4
f(-2) 16


f(3) 3×3²+2×3-4
f(3)3×9+6-4
f(3) 27+6-4
f(3) 33-4
f(3) 29