Solve for x using the Quadratic Formula: x^2 + 4x + 4 = 0 Is it
Ox= -2
Ox= -1
Ox=0
Ox=1?

x =-2

Step-by-step explanation:

for this problem, the use of the quadratic formula is not necessary. simply factor the equation :

x^2 + 4x + 4 = 0

ax^2 + bx + c = 0

find 2 numbers that add up to 'b' but multiply to 'c'

x^2 + 4x + 4 = 0

(x+2)(x+2) = 0

x= -2

step-by-step explanation: a reaction is first order. if the initial reactant concentration is 0.0200 m, and 25.0 days later the concentration is 6.25 x 10-4 m, then its half-life is: