x^2+ax+a =1 what is value of a plz
Solving this for x: x² + ax + a = 1
---> ax + a = 1 - x²
---> a(x + 1) = 1 - x²
---> a = (1 - x²) / (x + 1)
---> a = (1 - x²) / (1 + x)
---> a = (1 + x)(1 - x) / (1 + x)
---> a = 1 - x (provided that x ≠ -1)