Question

expand (2x + 3y) cube​

Answer 1

Answer:

just simplify it in ( a^3+b^3) method......

Answer 2

formula used, (a+b)³=a³+b³+3a²b+3ab²

(2x+3y)³=(2x)³+(3y)³+3(2x)²×3y+3(2x)(3y)²

=8x³+27y³+9y(4x²)+6x(9y²)

=8x³+27y³+36x²y+54xy²