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>
Answer:4 vases
Step-by-step explanation:
By the formula for the area of an equilateral triangle (s^2sqrt(3)/4), the area is sqrt(3)/4.
Step-by-step explanation:
best way to see it check the substitution and the numbering