simplify (5y+1) (5y+2) (5y+3)
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Step-by-step explanation:
Comparing (5y + 1) (5y + 2) (5y + 3) with (x + a) (x + b) (x + c) we have x = 5y ; a = 1; b = 2 and c = 3.
(x + a) (x + b) (x + c) = x3 + (a + b + c) x2 (ab + bc + ca) x + abc =
(5y)3 + (1 + 2 + 3) (5y)2 + [(1) (2) + (2) (3) + (3) (1)] 5y + (1)(2) (3) =
53y3 + 6(52y2) + (2 + 6 + 3)5y + 6 =
1253 + 150y2 + 55y + 6
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