Respuesta :

devishri1977

Answer:

Step-by-step explanation:

Product = 20

Sum = 12

Factors = 2 , 10    {2*10 = 20 & 2+10 = 12}

x² +12x + 20 = x² + 2x + 10x + 20    {Split the middle terms using the factors}

       = x( x + 2) + 10(x + 2)

       = (x + 2)(x + 10)