Triển khai:
BT2 : Triển khai - ( 2x + y )^2
- ( 3x + 2 y )^2
- ( x + 5y )^2
- ( x + 3y )^2
- ( 3x + y )^2
- ( 4x + 3y )^2
- ( x + 8y )
- ( 2xy + 1 )^2
- ( 3xy + 5^2)
- ( x^2 + 2 )^2
- ( 3x + y^2 )^2
- ( 5x + 4y^2 )^2
- ( 2x^2 + y^2)^2
- ( 5xy + 3 )^2
- ( x + 3y^2 )^2
- ( x^2 + 2y )^2
- ( 2x + 7y )^2
- ( 5x + 4y )^2
- ( 7x + 6y )^2
- ( 5x^2 + y^2 )^2 Giup mình vs ạ
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