Which of the following equation has no solution -2x^2+2x+1 2x^2-2x-1 2x^2+2x-1 -2x^2-2x-1

They both have no solutions

Step-by-step explanation:

(x-y)(x-y-2)(x-y+2)

Step-by-step explanation:

Notice that (x-y) both are the same, factor (x-y) out.

Then just finish things inside the bracket, hope you remember the formula of completing the square

This part is a bit confusing as you need to convert the x^2-2xy+y^2-4 again.

The answer is here...

[Note]: Notice that there's , use the formula of the Difference of Two Squares.

Then you can factor inside the bracket again, just two bracket factoring.

It's hard but if you understand it then that's good!