Find an equation that has the solutions a 25 a 1 a 1 Writ

Find an equation that has the solutions: a = 2/5, a = 1, a = -1 Write your answer in standard form.

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Given 3 solutions of an equation as a = 2/5 , 1, -1

=> (a-2/5) (a-1) (a +1) = 0

(a - 2/5) (a^2 - 1) = 0

a^3 - (2/5)a^2 -a + (2/5) = 0

5a^3 - 2a^2 - 5a + 2 = 0

Solution