Answer:
try (b+10)^2
Step-by-step explanation:
Step 1: Rewrite
b^2+20b+100 --------> b^2+(2b*10)+10^2
Step 2: Apply square formula (a+b)^2 = a^2+2ab+b^2
b^2+(2b*10)+10^2 -----------> (b+10)^2
Hope this helps!
