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F(x=-3) = -2(-3)² + 4(-3)
= -2(9) + 4(-3)
= -18 -12 = -30
F(x=-2) = -2(-2)² + 4(-2)
= -2(4) + 4(-2)
= -8 -8 = -16
F(x=-1) = -2(-1)² + 4(-1)
= -2(1) + 4(-1)
= -2 -4 = -6
F(x=0) = -2(0)² + 4(0)
= 0 + 0 = 0
F(x=1) = -2(1)² + 4(1)
= -2(1) + 4(1)
= -2 + 4 = 2
F(x=2) = -2(2)² + 4(2)
= -2(4) + 4(2)
= -8 + 8 = 0
F(x=3) = -2(3)² + 4(3)
= -2(9) + 4(3)
= -18 + 12 = -6
Domino: Reales
Rango: {y∈ R: y≤2}