Prepping for TSI: I don't recall working out solutions though

Which of the following equations has both 1 and −3 as
solutions?
A. x^2 − 2x − 3 = 0
B. x^2 + 2x − 3 = 0
C. x^2 − 4x + 3 = 0
D. x^2 + 4x + 3 = 0

Question

Prepping for TSI: I don't recall working out solutions though

Which of the following equations has both 1 and −3 as
solutions?
A. x^2 − 2x − 3 = 0
B. x^2 + 2x − 3 = 0
C. x^2 − 4x + 3 = 0
D. x^2 + 4x + 3 = 0

phi · Answer

do you know what  "solution" means?  it means when x=1 or x=-3
you should get  0  (in other words, the left side of the equation equals the right side)