Question

calcula A(2)-A(4),si A(m) =-3m+5m²+4​

Answer 1

Respuesta:

$A(2) = - 3 \times 2 + 5 \times {2}^{2} + 4 = - 6 + 5 \times 4 + 4 = - 6 + 20 + 4 = 14 + 4 = 18$

$A(4) = - 3 \times 4 + 5 \times {4}^{2} + 4 = - 12 + 5 \times 16 + 4 = - 12 + 80 + 4 = 68 + 4 = 72$

$A(2)-A(4) = 18 - 72 = - 54$