find the product
hurry up please
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a+b(a²-ab+b²)=a³+b³
here a =x ,b=3y
x+3y(x²-3xy+9y²)=x³-(3y)³=x³+27y³
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a-b(a²+ab+b²)=a³-b³
here a =7a,b=5b
7a-5b(49a²+35ab+25y²)=343a³-125b³
here a =x ,b=3y
x+3y(x²-3xy+9y²)=x³-(3y)³=x³+27y³
========= == ======= ====== = =======
a-b(a²+ab+b²)=a³-b³
here a =7a,b=5b
7a-5b(49a²+35ab+25y²)=343a³-125b³
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