how can we solve this??
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Step-by-step explanation:
(2x-3y+5)³=(2x)³+(-3y)³+5³+3{(2x-3y)(3y+5)(5+2x)}
=8x³-9y³+125+3{(2x-3y)(15y+6xy+25+10x)}
=8x³-9y³+125+3(30xy+12x²y+50x+20x²- 45y²-18xy²-75y-30xy)
=8x³-9y³+125+3(20x²-45y²+12x²y-18xy²+50x-75y)
=8x³-9y³+60x²-135y²+36x²y-54xy²+150x- 225y+125
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