Question

9(2a-b)^2-8a+4b-13 pls fast​

Answer 1

Sol:

9(2a-b)^2-8a+4b-13

or, 9(4a^2 - 4ab + b^2) - 8a + 4b - 13

or, 36a^2 - 36ab + 9b^2 - 8a + 4b - 13