Question

y=x-1
x-y^2=9
Solve for x, I got the answer of x=the square root of x-8 but it doesnt seem correct

Answer 1

x-(x-1)^2=9

Answer 2

x-(x^2-2x+1 = 9

Answer 3

x-x^2+2x-1=9

Answer 4

How did you get 2x in the second step

Answer 5

(x-1)(x-1) = x^2-2x+1

Answer 6

I see

Answer 7

so then it becomes -x^2-x+1=9

which means x= the square root of -x-8?

Answer 8

y=x-1
x-y^2=9
x-(x-1)^2=9
x-x^2+2x-1=9
-x^2+3x-1=9
-x^2+3x-10=0
-1(x^2-3x+10)=0
quadratic equation:
x=(3+sqrt(3^2-4(10))/2
x=(3+sqrt(-31))/2
no real solution