Question

fill in thr blanks:

1, (2x+3y)^3 =___________

2, (2x+y-z)^2=___________

3, (3a+b) ^3 =___________

Answer 1

1 answer is 8x^3 + 27y^3 + 36x^2y + 54xy^2 and the 2 answer is. 4x^2 + y^2 - z^2 + 4xy - 2yz - 4zx and the 3 answer is. 27a^3 + b^3 + 27a^2b + 9ab^2