Question

12. x2 + (3x - y) (3x + y + y2)
plz simplify this question.
It's urgent​

Answer 1

Answer:- 10x²+3xy²-y²-y³

Step by step explanation:

x²+3x(3x+y+y²)-y(3x+y+y²)

x²+9x²+3xy+3xy²-3xy-y²-y³

10x²+3xy²-y²-y³

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