Question 1115329
{{{f(-5)= (-5)^ 3 + 3(-5)^ 2 - 9(-5) - 13 = -125+75+45-13=-18}}}
{{{f(-4)= (-4)^ 3 + 3(-4)^ 2 - 9(-4) - 13 = -64+48+36-13 =7}}}
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Yes