hi friend I am Nevika , I need your help please solve this maths questions.please help me I will mark ur ans as braniliest. please, please help me . it's so urgent so please help me now thank you. thanks a lot
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xy=21
(a+b)^3=a^3+b^3+3ab(a+b)
(x+y)^3=x^3+y^3+3xy(x+y)
1000=x^3+y^3+3(21)(10)
1000=x^3+y^3+630
1000-630=x^3+y^3
x^3+y^3=370