Factorise: 15(x+y)^2 - 5x-5y
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15(x+y)²-5x-5y
15(x+y)(x+y)-5(x+y)
5(x+y){3(x+y)-1}
5(x+y){3x+3y-1}
15(x+y)(x+y)-5(x+y)
5(x+y){3(x+y)-1}
5(x+y){3x+3y-1}
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1
Answer:
15(x+y)2-5x-5y
15(x+y)(x+y)-5(x+y) 5(x+y){3(x+y)-1} 5(x+y)(3x+3y-1}
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