Solve (x + 3)^2 + (x + 3) – 2 = 0.
Let u = x+3
Rewrite the equation in terms of u.
Au^2 + u – 2 = 0
B(u^2 + 9) + u – 2 = 0
Cu^2 + u + 1 = 0
Let u = x+3
Rewrite the equation in terms of u.
Au^2 + u – 2 = 0
B(u^2 + 9) + u – 2 = 0
Cu^2 + u + 1 = 0