Answer:
Step-by-step explanation:
Multiplying out (x+1)(x+3)=5, we get x^2 + 3x + 1x + 3 = 5, or
x^2 + 4x = 2, or
x^2 + 4x - 2 = 0
The solutions of this quadratic are:
-4 ± √( 16 - 4(1)(-2) ) -4 ± √8
x = ----------------------------- = -------------
2 1
Both roots have the component √2 in them, and so none of the possible answer choices matches. Double check, please, to ensure that you've copied this problem down correctly. Thx.
x = -----------------
