Step-by-step explanation:
3. (x+y)(x²-xy+y²)
= (x+y)(x²) - (x+y)(xy) + (x+y)(y²)
= x³ + x²y - x²y - xy² + xy² + y³
= x³ + y³
4. (x-y)(x²+xy+y²)
= (x-y)(x²) + (x-y)(xy) + (x-y)(y²)
= x³ - x²y + x²y - xy² + xy² - y³
=x³ - y³
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Answers & Comments
Step-by-step explanation:
3. (x+y)(x²-xy+y²)
= (x+y)(x²) - (x+y)(xy) + (x+y)(y²)
= x³ + x²y - x²y - xy² + xy² + y³
= x³ + y³
4. (x-y)(x²+xy+y²)
= (x-y)(x²) + (x-y)(xy) + (x-y)(y²)
= x³ - x²y + x²y - xy² + xy² - y³
=x³ - y³
Pa brainliest
#CarryOnLearning