Please post the complete question.Could someone explain to me how you get the last row. I don’t understand why 11 turns to +11. If the signs are changing why didn’t 28 become -28?
Or did I just get the whole thing wrong?
If x1 and x2 are given as the roots of the equation, then the middle term is not their sum, but the negative of their sum.Could someone explain to me how you get the last row. I don’t understand why 11 turns to +11. If the signs are changing why didn’t 28 become -28?
Or did I just get the whole thing wrong?
The first part is the question and the second part is suppose to be the solution.Please post the complete question.
I wasn’t really given a formula, just the solution and a couple of other examples. That’s why I’m confused. I have the solution but I don’t understand it...If x1 and x2 are given as the roots of the equation, then the middle term is not their sum, but the negative of their sum.
In addition to showing the complete problem statement, please show us what you were taught that justifies what you did -- a theorem or formula or something like that. It may be something like these:
Vieta's formulas - Wikipedia
en.wikipedia.org
No, something has to have been said about what x1 and x2 are, or it is meaningless! Can't you show us the actual problem? Even if it's in another language, it can help.The first part is the question and the second part is suppose to be the solution.
I think you’re suppose to create an equation using only x1 and x2.
Please just tell us what you were taught, whether it is called a formula or not. If it was only examples, show us the examples, so we can see if you are extrapolating incorrectly from them. We need to see on what grounds you think what you did should be right, so we can correct that.I wasn’t really given a formula, just the solution and a couple of other examples. That’s why I’m confused. I have the solution but I don’t understand it...
If you don't know what's going on, say so. The first part is NOT a question if the only thing there is 2 variables and their values.The first part is the question and the second part is suppose to be the solution.
I think you’re suppose to create an equation using only x1 and x2.
Ok, then I don’t know what’s going on.If you don't know what's going on, say so. The first part is NOT a question if the only thing there is 2 variables and their values.
X1 and X2 for the roots of the equation. With them you have to make a quadratic equation using Viet's formulas.No, something has to have been said about what x1 and x2 are, or it is meaningless! Can't you show us the actual problem? Even if it's in another language, it can help.
Please just tell us what you were taught, whether it is called a formula or not. If it was only examples, show us the examples, so we can see if you are extrapolating incorrectly from them. We need to see on what grounds you think what you did should be right, so we can correct that.
Assuming the 2 values are the roots and you need to produce the corresponding quadratic equation, take a look here:Ok, then I don’t know what’s going on.
ThanksAssuming the 2 values are the roots and you need to produce the corresponding quadratic equation, take a look here:
Formation of Quadratic Equation with Given Roots
Formation of Quadratic Equation with Given Rootswww.onlinemath4all.com
Or you can just write the equation in factored form, then multiply and simplify:
(x-x1)(x-x2)=0
If that is what the question really says, and what you were taught, then the links lev888 and I showed you are appropriate. I do wish you would show what we ask for rather than hide facts.X1 and X2 for the roots of the equation. With them you have to make a quadratic equation using Viet's formulas.
That’s what I found out, if that helps