SOLUTION: What is x with x2-2x-13=0? And x2+12x-64=0? I've tried several times to find out what x is but neither of my solutions to these problems seem correct.

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Question 431169: What is x with x2-2x-13=0? And x2+12x-64=0? I've tried several times to find out what x is but neither of my solutions to these problems seem correct.
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
Use the quadratic formula. The quadratic formula says that the roots of any quadratic equation in the form ax%5E2+%2B+bx+%2B+c+=+0 (with a,b,c real) are x+=+%28-b+%2B-+sqrt%28b%5E2+-+4ac%29%29%2F2a. From here, it's just simply identifying what a,b,c are and then substitution.