Answer:
(x - 3/5) (x + 4/3)
Step-by-step explanation:
Assuming that the equation is 15x^2 and not 15 x 2, the problem proceeds as so:
Using the x method, multiply 15 by -12 and place that at the top of the x, 11 being placed at the bottom. In the x method, whatever two numbers multiply to produce the top number and add to give the bottom one are your factors.
Placing -180 at the top and 11 on the bottom, you get the numbers -9 and positive 20.
Setting up the first binomials as (x - 9) and (x +20), divide both constants by 15 as the original coefficient is not 1. This gives you 9/15 and 20/15 which simplify to the answers 3/5 and 4/3.
