Verify `x^(3)+y^(3)=(x+y)(x^(2)-xy+y^(2))` using some non-zero positive integers and check by actual multiplication. Can you call these as identites ?

Verify (i) x ^(3) + y ^(3) = (x + y) (x ^(2) -xy + y ^(2)) (ii) x ^(3) -y ^(3) = (x-y) (x ^(2) +xy +y ^(2)) using some non-zone positive integers and check by actual multiplication. Can you call these as identities ?

Verify x^3-y^3=(x-y)(x^2+xy+y^2) Using some non-zero positive integers and check by actual multiplication can you call these as identities?

Solve (x^(3)-3xy^(2))dx+(3x^(2)y-y^(3))dy=0

Find 11x^(2)y xx 2xy^(2) xx 5x^(3)y^(3)

Find the positive integers x and y such that x+y=60 " and " xy^(3) is maximum.

Add 5x^(2)+3xy+2y^(2)" and "2y^(2)-xy+4x^(2)