Question

expand (5x + 7y)3 plz do fast
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Answer 1

Answer:

(15x + 21y)

You can further put the values of x and y.

Answer 2

Answer:

If the question was (5x+ 7y)^3 then the answer is

125x^3+343y^3+ 525x*x*y +735x*y*y

If the question was (5x + 7y)3 then answer is

15x+ 21y

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