Answer :
y = x² + 1
y = x + 1
x² + 1 = x + 1
- 1 - 1
x² = x
x² - x = 0
x² + 0x - x - 1 = 0
(x - 1)(x + 0) = 0
x - 1 = 0 or x + 0 = 0
+ 1 + 1 - 0 - 0
x = 1 x = 0
y = x + 1
x² + 1 = x + 1
- 1 - 1
x² = x
x² - x = 0
x² + 0x - x - 1 = 0
(x - 1)(x + 0) = 0
x - 1 = 0 or x + 0 = 0
+ 1 + 1 - 0 - 0
x = 1 x = 0