Question

how can we solve this??​

Answer 1

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