Please help!!(y+5)^3

Mathematics

2 answers:

Lera25 [3.4K]4 years ago

7 0

the answer is 58 8.........

lukranit [14]4 years ago

6 0

(y+5)^3 is the same as (y+5)(y+5)(y+5)

It is easiest to multipy out 2 of the brackets first
(y+5)(y+5)
y^2+5y+5y+25
y^2+10y+25

We then have to multiply what we just got by (y+5). I personally multiply it all by y first to get

y^3+10y^2+25y

and then multiply the first answer by 5 to get

5y^2+50y+125

then add these together for the final answer

y^3+15y^2+75y+125

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