Replace the with , then group.
Factor:
Now, you can solve each of the quadratics for their two solutions and you're set.
All the solutions are real.
I'm not sure how to factor or solve this problem without graphing, but I know the answer comes to be positive and negative rad 5 and positive and negative rad 2. I need to know how to go through the process to find these 4 answers.
here's the formula:
0=x^4-2x^3-6x^2+4x+8
thanks so much if you can help!!