First you need to solve the equation for x so it would become -2x^2+2x+24=0, when you factor it out it becomes -2(x^2-x-12)After factoring the inside it becomes -2(x-4)(x+3). Now (x-4) equals to 0 and (x+3) equals to 0 after solving for x you get the roots 4,-3
When distributing a problem with 2 of the same signs, all you have to do is leave it the way it is. Basically pretend it's not there at all and you should the answer