Factor by grouping sometimes called the acmethod 11 x2 2x

Factor by grouping (sometimes called the ac-method) 11 x^2 + 2x - 9 First, choose a form with appropriate signs Then, fill in the blanks with numbers to be used for grouping. Finally, show the factorization 11x^2 + x + x - 9 11x^2 + x - x - 9 11x^2 - x + x - 9 11x^2 - x - x - 9

Solution

First -

11 snd -9

second-

11 and 9

Third

9 and 11

fourth

-11 and 9

The quadratic given is having a unique factor form only they can be arranged according to their sign. so above are the four existing solutions.