Finn checks that (x-1) (x+3) = x2+2x-3 by multiplying and gets x2-x+3x-3. He believes he must have made a multiplication error. Is he correct? Explain.

No multiplication error. He is still correct. He should solve for the like terms (-x+3x) = 2x

Step-by-step explanation:

Given the expression as;

(x-1) (x+3)

Distribute as;

x (x+3) - 1 (x+3)

open brackets

x*x+x*3-1*x-1*3

x²+3x-x-3

x²+2x-3