Don't convert 2 into 4/2. Just divide it by the 2 in the denominator. This is not a mistake, just an unnecessary complication.I got the answer correct once, but when I did it again I got it wrong. I have done it a myriad of different ways since, but I am doing something wrong.
the photo is my last attempt..
Where you wrote the word "solve", you appear to be actually checking the solution you had in the line above. That's a good thing to do, but you need to know what "solve" means.I got the answer correct once, but when I did it again I got it wrong. I have done it a myriad of different ways since, but I am doing something wrong.
the photo is my last attempt..
Now you've got it right. (The simplification is not need in the check, just in how teachers often expect you to write your answer.)Am I doing it right?
did I miss the square of a sum? I did not require that formula in this one..
You made numerous errors from the start.I got the answer correct once, but when I did it again I got it wrong. I have done it a myriad of different ways since, but I am doing something wrong.
the photo is my last attempt..
Thanks for the clarification.You made numerous errors from the start.
[math](2x - 3)^2 = - 12 \text { DOES NOT RESULT IN } 2x - 3 = \sqrt{-12}.[/math]
The correct result is [imath]2x - 3 = \pm \sqrt{-12}.[/imath]
It is false that [imath]\pm \sqrt{-12} = \sqrt{12}[/imath].
It is also false that [imath]\sqrt{12} = \pm \sqrt{12}.[/imath]
Practically every line is in error.
But I wonder how you started with [imath](2x - 3)^2 = - 12.[/imath]
Are you studying complex numbers. If not, what was the original problem?
Yes, I agree. Thanks.Now you've got it right. (The simplification is not need in the check, just in how teachers often expect you to write your answer.)
The square of a sum, done incorrectly, was here:
View attachment 28588 to View attachment 28589
It's a subtraction, not a product and [imath](a-b)^2[/imath] is equal to [imath]a^2-2ab+b^2[/imath], not to [imath]a^2-b^2[/imath] as you assumed.
But as I said, its quicker and safer to take the new way, in large part because you avoided having to do this error-prone task.