Answer:
1 + root 5, 1 - root 5
Step-by-step explanation:
I assume you mean 3x^2-6x-12=0.
First, note that you can divide both sides by 3. You get:
x^2-2x-4=0
Use the quadratic equation.

Therefore, x=1 + root 5, 1 - root 5
yes it is greater than 2/5
Answer: 7
Step-by-step explanation:
The whole number that comes before 105 is 104.
However, it is not the only whole number that comes before 105.
Whole numbers are identified as natural number and zero (0). Meaning the whole number starts with 0 then followed by 1,2,3,4.... so on. Whole numbers are positive numbers without remainders nor fractions.
Whole number that come before 105 range from 0 to 104.
Natural numbers are also called counting numbers; They start with 1. Zero is not a natural number because it cannot be counted.
Integers are numbers which can be positive or negative and it includes zero.
Base= x
Height= 4+x
Area = (1/2)(x)(4+x) = 6
Hence, quadratic equation is,
(x)(8+2x) = 12