\({x^2} - 9x - 9y - {y^2}\)
A.\(\left( {x + y} \right)\left( {x - y - 9} \right)\)
B.\(\left( {x - y} \right)\left( {x + y - 9} \right)\)
C.\(\left( {x + y} \right)\left( {x + y + 9} \right)\)
D.\(\left( {x - y} \right)\left( {x + y + 9} \right)\)
A.\(\left( {x + y} \right)\left( {x - y - 9} \right)\)
B.\(\left( {x - y} \right)\left( {x + y - 9} \right)\)
C.\(\left( {x + y} \right)\left( {x + y + 9} \right)\)
D.\(\left( {x - y} \right)\left( {x + y + 9} \right)\)
Loga
Hóa Học lớp 12
