1. The equation is (x+1)? - 9(x+1) + 18 = 0. To solve the equation, we set W = (x+1). The resulting quadratic equation is --?
I tried solving it and got x? - 7x +10 or x? -9x +18, but they were both wrong.
2. The equation x^6 + 2x? - 4 = 0. To solve the equation, we set W = ---??
The resulting quadratic equation is --?
I tried (x?+1)? - 5, but it was wrong too
And lastly,
3. (y + 6)^2/3 - 2(y + 6)^1/3 - 3 = 0
I got y=21, but it was wrong!
What am I doing wrong? (Thank you so much for the help, I'll give you best answer for sure!)
I tried solving it and got x? - 7x +10 or x? -9x +18, but they were both wrong.
2. The equation x^6 + 2x? - 4 = 0. To solve the equation, we set W = ---??
The resulting quadratic equation is --?
I tried (x?+1)? - 5, but it was wrong too

And lastly,
3. (y + 6)^2/3 - 2(y + 6)^1/3 - 3 = 0
I got y=21, but it was wrong!
What am I doing wrong? (Thank you so much for the help, I'll give you best answer for sure!)