Question

write a formula for 1) (x+y+z)²
2) (x+y)³​

Answer 1

Step-by-step explanation:

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Answer 2

1) (x+y+z)^2=x^2+y^2+z^2+2(xy+yz+zx)

2)(x + y)³ = x³+y³-3xy(x+y)

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