Respuesta :

wegnerkolmp2741o

Answer:

(x+10)^2

Step-by-step explanation:

x^2+20x+ 100

What 2 numbers multiply to 100 and add to 20

10*10 =100

10+10=20

(x+10) (x+10)

(x+10)^2
X^2+10x+10x+100
X(x+10)+10(x+10)
(X+10)(x+10)
(X+10)^2