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= (7x + 5y) (7x + 5y)
= 49x² + 35xy + 35xy + 25y²
= 49x² + 70xy + 25y²
semoga membantu ^_^
= (7x + 5y)( 7x + 5y)
= 49x² + 35xy + 35xy + 25y²
= 49x² + 70xy + 25y²