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What are the possible rational zeros of [tex]f(x) = x^4+2x^3-3x^2-4x+18[/tex]

How many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.) how many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.)

Which of the following constants can be added to x2 - 3x to form a perfect square trinomial?