Multiply to negative 60 add to negative 11
In general the binomial expansion is

So in our case, because we want ascending powers of x we'll write,

We need to calculate the binomial coefficients:






The number that missing is clearly 81
Answer:
4/4
Step-by-step explanation:
Hope this helped have an amazing day!
A^2b^2-1
The factor of that is (ab-1)(ab+1)
144y^2-49
The factor of that is (12y-7)(12y+7)