( 3x - 5y)² + 60 xy Factorise it pls!!!
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Answer:
(3x-5y)²+60xy.
(3x-5y)².
By using formula (a-b)²=a²-2ab+b² a=3x & b=5y.
(3x-5y)²=(3x)²-2(3x)(5y)+(5y)².
=9x²-30xy+25y².
(3x-5y)²+60xy=(9x²-30xy+25y²)+60xy. (Because (3x-5y)²=9x²-30xy+25y²).
=9x²-30xy+25y²+60xy.
=9x²+30xy+25y². (Because -×+=- & largest number is important).
I think this is your answer.
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Please mark it as brainlist answer.
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