8x cube + 27y cube = 730 and 2xsquare y + 3xy square =15 find 2x +3y
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I think answer is 5xy
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I hope this helps rebecca shigy
8x^3+27y^3=730
2x^2y+3xy^2=15
(2x+3y)^3=(2x)^3+(3y)^3+3*2x*3y(2x+3y)
=8x^3+27y^3+18xy(2x+3y)
=730+36x^2y+54xy^2
=730+18(2x^2y+3xy^2)
=730+18(15)
=730+270
(2x+3y)^3=1000
(2x+3y)=root of 1000
=10
please rate this and i hope this helps you thekkekara
8x^3+27y^3=730
2x^2y+3xy^2=15
(2x+3y)^3=(2x)^3+(3y)^3+3*2x*3y(2x+3y)
=8x^3+27y^3+18xy(2x+3y)
=730+36x^2y+54xy^2
=730+18(2x^2y+3xy^2)
=730+18(15)
=730+270
(2x+3y)^3=1000
(2x+3y)=root of 1000
=10
please rate this and i hope this helps you thekkekara
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