SOLUTION: I need help mulitplying this problem. I dont know how to set it up and show my work. multiply: (a-2/5)(a+5/2)

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Question 399467: I need help mulitplying this problem. I dont know how to set it up and show my work.
multiply:
(a-2/5)(a+5/2)

Answer by CharlesG2(834)   (Show Source): You can put this solution on YOUR website!
I need help mulitplying this problem. I dont know how to set it up and show my work.
multiply:
(a-2/5)(a+5/2)

use FOIL, First Outer Inner Last
(a - 2/5)(a + 5/2)
a^2 + (5/2)a - (2/5)a - 1
a^2 + (25/10)a - (4/10)a - 1 (common denominators)
a^2 + (21/10)a - 1

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