Question

Q7. Find: x2 + (3x - y)(3x + y + y2)
A. 10x2-3xy2 - y2 - y3
B. 10x2-3xy2 + y2 - y3
c. 10x2+3xy2 - y2 - y3
D. 10x2-3xy2 - y2 + yə​

Answer 1

answer:(c) is the answer

explanation:

x2+3x(3x+y+y2)-y(3x+y+y2)

x2+9x2+3xy+3xy2-3xy-y2-y3

10x2+x3xy2-y2-y3

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