Question

Find the continued product
(x+3)(x+y) (x+5)​

Answer 1

(x−3)(x+3)(x

2

+9)

as (a+b)(a−b)=a

2

−b

2

=(x

2

−9)(x

2

+9)

=x

4

−81

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Answer 2

Answer:

(x+3)(x+y) (x+5)

[x(x+y)+3(x+y) ] (x+5)

(x²+xy+3x+3y) (x+5)

x(x²+xy+3x+3y)+5(x²+xy+3x+3y)

x³+x²y+3x²+3xy+5x²+5xy+15x+15y

x³+8x²+x²y+8xy+15x+15y

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