Question

Expand, using suitable identities: (2x-5y)³​

Answer 1

Answer:

Bro you can do ur answer when You use (a³+b³) = a³+b³+3ab(a+b)

Answer 2

Answer:

Given, (2x-5y)³

Applying (a-b)³ Identity,

[ (a-b)³ = a³-b³-3a²b+3ab² ]

Substituting Values,

[ (2x-5y)³ = (2x)³-(5y)³-3(2x)²(5y)+3(2x)(5y)² ]

= 8x³-125y³-60x²y+150xy²

I HOPE THIS WILL HELP YOU!!