No I already figured out the answer. It's x=-13.5 or x=13. But whenever I do the same question by completing the square, I get 1/2 +-sqrt175.75. So I just wanted to know if I've made an error or not.
No I already figured out the answer. It's x=-13.5 or x=13. But whenever I do the same question by completing the square, I get 1/2 +-sqrt175.75. So I just wanted to know if I've made an error or not.
You shouldn't be getting real solutions, unless you've made an error in copying the question.
No I already figured out the answer. It's x=-13.5 or x=13. But whenever I do the same question by completing the square, I get 1/2 +-sqrt175.75. So I just wanted to know if I've made an error or not.
Neither of those is a solution to the equation that you posted - was there an error in it? Should it have been -351?
Yes, I can solve it. I would, however, prefer for you to try first.
Just so you know, both roots are complex, so they are far beyond GCSE understanding.
No I already figured out the answer. It's x=-13.5 or x=13. But whenever I do the same question by completing the square, I get 1/2 +-sqrt175.75. So I just wanted to know if I've made an error or not when I tried solving it through completing the square.
No I already figured out the answer. It's x=-13.5 or x=13. But whenever I do the same question by completing the square, I get 1/2 +-sqrt175.75. So I just wanted to know if I've made an error or not when I tried solving it through completing the square.
Both of those are wrong. This equations has no real roots.