Question

Would the answer to the following be 5 x?
expand and simplify: (x+1)(x+3)

Answer 1

(x+1)(x+3)

x^2+3x+x+3

x^2+4x+3

That's how you expand it.

and to get the answer, you can equal (x+1)(x+3) to 0.

(x+1)(x+3)=0

x+1=0 or x+3=0

x=-1 or x=-3

Answer 2

`(x+1)(x+3) =x^2+3x+x+3=x^2+4x+3`