To solve an absolute inequality first step is to isolate absolute value expression.
Hence remove -4 from the left side. So, add 4 to each sides of the inequality.
2|x + 7|−4 ≥ 0
2|x + 7|−4 +4≥ 0 +4
2|x + 7| ≥ 4 Combine the like terms.
Divide each sides by 2.
|x + 7| ≥2
Next step is to remove the absolute value sign. So,
x + 7≥2 and x+7≤-2.
x≥2-7 and x≤-2-7
x≥-5 and x≤-9
So, the correct choice is C. {x | x ≤ -9 or x ≥ -5}.
Answer:
The factors are
Step-by-step explanation:
we have
equate the expression to zero
Group terms that contain the same variable, and move the constant to the opposite side of the equation
Factor the leading coefficient
Complete the square. Remember to balance the equation by adding the same constants to each side
Rewrite as perfect squares
Take square root both sides
therefore
First u add d and then divide by x
It's a reflection :) look up colin Dodds geometric transformations that's how I learned it it's a fun song
The Domains Are 3,3,7,8. You Can Remember This By Remembering That The Domain Is All X Factors And Range Is All Y Factors