Answer:
Step-by-step explanation:
Sum = 20
Product = 5*20 = 100
Factors = 10 , 10 {10*10 = 100 ; 10+10 = 20}
5x² + 20x + 20 = 5x² + 10x + 10x + 10*2
= 5x(x + 2) + 10(x + 2)
= (x + 2)(5x + 10)