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BriBriMinear
What polynomial has roots of –4, 2, and 5 ?
x3 – x2 – 22x + 40 x3 + x2 – 22x – 40 x3 + 3x2 – 18x – 40 x3 – 3x2 – 18x + 40
x = -4 or x = 2 or x = 5 x+4=0 or x-2=0 or x-5=0 (x+4)(x-2)(x-5) = 0 See where to go from here?