Question

find alpha and beta if x+1 and x+2 are factors of p(x)= x³+3x²-2 alpha×beta+beta​

Answer 1

Step-by-step explanation:

let x+1 = 0

therefore, x=-1

let alpha = -1

Let x+2 = 0

Therefore, x=-2

Let beta = -2

alpha * beta + beta

= (-1) * (-2) + (-2)

= 2 -2

= 0

Hence it is done...