Asked by amanda
simplify the expression:
(y+5)^3
(y+5)^3
Answers
Answered by
Reiny
using the coefficients from Pascal's triangle
1 3 3 1
(y+5)^3
= y^3 + 2y^2(5) + 3(y)(5^2) + 5^3
= y^3 + 10y^2 + 75y + 125
of course you can also do (x+5)(y+5)(y+5)
1 3 3 1
(y+5)^3
= y^3 + 2y^2(5) + 3(y)(5^2) + 5^3
= y^3 + 10y^2 + 75y + 125
of course you can also do (x+5)(y+5)(y+5)
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