Question 417908
1. Multiply  (c+ 1/2) (c+1/5)

c(c+1/5)+1/2(c+1/5)
c^2+c/5 +c/2 + 1/10
c^2+7c/10 +1/10


2.Factor c^2+10c+25 = My answer is (c-5)(c+5)?

This is an identity.
a^2+2ab+b^2=(a+b)^2
c^2+2*1*5c+5^2
(c+5)^2