5x³+12xy+13y²
+
2x³+6xy-5y²
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Step-by-step explanation:
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Answered by
2
Answer:
Answer = 7x³ + 18xy + 8y²
Step-by-step explanation:
5x³ + 12xy + 13 y² - 2x³ + 6xy - 5y²
( 5x³ + 2x³ ) + ( 12xy + 6xy ) + ( 13y² - 5y² )
7x³ + 18xy + 8y²
Hence , answer = 7x³ + 18xy + 8y² .
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