Factor the following. 2x2 + 52 + 2 = 0
x = -1/2 , x= -2
x = 47 , x= -2
x=-2 , x = -2
x = 0 , x = -2
please help

x=2

Step-by-step explanation:

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:

a.

step-by-step explanation:

step 1 distribute 2 to every term in the parentheses

step 2 add 10 on both sides of the equal sign