Answer:
x = -2 ±sqrt( 10)
Step-by-step explanation:
x^2 + 4x = 6
Take the coefficient of x
4
Divide by 2
4/2 =2
Square it
2^2 =4
Add this to each side
x^2 + 4x+4 = 6+4
Take the 4/2 term which is the factor inside the (x+ )^2
(x+2)^2 = 10
Take the square root of each side
sqrt((x+2)^2) =±sqrt( 10)
x+2 = ±sqrt( 10)
Subtract 2 from each side
x+2-2 = -2±sqrt( 10)
x= +/- \sqrt(10) - 2
use the formula (b/2) in order to create a new term.
Solve for x by using the term to complete the square.
13
The slope of the function is m=-1/2
You didn't give any equations, but if it's the problem I'm thinking of, the answer should be D.
48
60*0.8
