Question

dadas as funções y=2x²-6x-4 e g(x)=-3x²-5x+1 calcule:
f(2)
f(-2)
f(3)
f(0)
f(-4)

Answer 1

y=2x^2-6x-4
f(2)=2.2^2-6.2-4
f(2)=2.4-12-4
f(2)=8-16
f(2)=-8
f(-2)=2.(-2)^2-6.(-2)-4
f(-2)=2.4+48
f(-2)=8+48
f(-2)=56
f(3)=2.(3)^2-6.3-4
f(3)=2.9-22
f(3)=18-22
f(3)=-4
f(0)=2.0^2-6.0-4
f(0)=2.0-0-4
f(0)=0-4
f(0)=-4
f(-4)=2.(-4)^2-6.(-4)-4
f(-4)=2.16-48
f(-4)=32-48
f(-4)=-16