Question

plzz someone help
how to solve 9(x-2y)^2 - 1​

Answer 1

Answer: 9x^2 - 36xy + 36y^2 - 1

Step-by-step explanation:

Step  1  :

 9 • (x - 2y)^2 -  1

Step  2  :

Evaluate :  (x-2y)^2   =    x^2-4xy+4y^2  

Final result :

 9x^2 - 36xy + 36y^2 - 1

Answer 2

Answer:

9(x-2y)²-1

9*(x² + 4y² + 4xy )- 1

9x²+36xy+36y²-1

9x²+21xy+15xy+36y²-1

3x(3x+7xy)+3y(5x+12y)-1