Question

9(2a-b)'2 -4(2a-b)-13​

Answer 1

Answer:

[18a-9b-13][2a-b+1]

Step-by-step explanation:

Let's take (2a-b) as x.

So,

= 9x²-4x-13

= 9x²+9x-13x-13

= 9x(x+1)-13(x+1)

= (9x-13)(x+1)

Now replacing the x by (2a-b),

= [9(2a-b)-13][(2a-b)+1]

= [18a-9b-13][2a-b+1]

Hope this helps.