Question

what's the factored form of x^2+10x+16

Answer 1

Let's start out by finding 2 factors of 16 that add up to 10. Since 16 is positive and 10 is positive, both factors will be positive.
Factors of 16: 1,2,4,4,8,16.
2+8=10
Our 2 factors are 2 and 8.
Now convert into factored form:
(x+2)(x+8)