Answer:
271
Step-by-step explanation:
X² - 3x - 4 = 0
Reverse FOIL method . . .
(x - 4)(x + 1) = 0
one of the paranthesis has to be equal to zero if the other is not . . .
x - 4 = 0
<u><em>x = 4</em></u>
x + 1 = 0
<u><em>x = -1</em></u>
No, it does not always have to be a decimal although it is more common to have one.
Carly's number is 36.5 and Henry's number is 40.5
