Mathematics, 18.03.2021 22:30 idcatall5

Which function is a quadratic function? a(x) = -2x3 + 2x - 6
b(x) = 5x3 + 8x2 + 3
c(x) = -8x2 + 3x - 5
d(x) = 6x4 + 2x - 3

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Which function is a quadratic function? a(x) = -2x3 + 2x - 6
b(x) = 5x3 + 8x2 + 3
c(x)...