9]
Find the product of :(x+y)(x2 - xy + y²)
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Answer:
x³ + y³
Step-by-step explanation:
( x + y ) ( x² - xy + y² )
= x ( x² - xy + y² ) + y ( x² - xy + y² )
= x³ - x²y + xy² + x²y - xy² + y³
= x³ + y³+ x²y - x²y + x²y - x²y
= x³ + y³ + 0 + 0
= x³ + y³
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