Given that the function f (x) = x + (a + 2) x + B satisfies f (- 1) = - 2: if the equation f (x) = 2x has a unique solution, find the value of real numbers a and B Write down the whole process,

Given that the function f (x) = x + (a + 2) x + B satisfies f (- 1) = - 2: if the equation f (x) = 2x has a unique solution, find the value of real numbers a and B Write down the whole process,

Let x = - 1 generation 1 - (a + 2) + B = - 2 A-B = 1 f (x) = 2x x + (a + 2) x + B = 2x x + ax + B = 0 a-4b = 0 a = 2 b = 1