Answer:
- Lin has provided the correct answer.
Step-by-step explanation:
The equation has two roots as a quadratic equation.
Elena's solution ends up with loss of one of the roots when cancelling the variable.
Lin gets two roots, so she is correct.
The answer is 2.
The formula for slop is y2-y1/x2-x1
Using this formula we get 12-4/6-2 or 8/4 which simplifies to 2.
Hope this helps!
Negative 12 over negative 6.
Over means to divide (fraction).
-12/-6
A negative divided by a negative equals a positive.
-12/-6 = 2
Answer: 2
Answer:
(c) x = 2 and x = -8
Step-by-step explanation:
The rules of logarithms let you rewrite this as a quadratic equation. That equation will have two (2) potential solutions. We know from the domain of the log function that any negative value of x will be an extraneous solution.
__
The rules of logarithms that apply are ...

__
<h3>take antilogs</h3>
We can rewrite the equation so that only one logarithm is involved. Then we can take antilogs.

__
<h3>solve the quadratic</h3>
Adding (6/2)² = 9 to both sides will "complete the square."
16 +9 = x² +6x +9 . . . . . . . add 9
25 = (x +3)²
±√25 = x +3 = ±5 . . . . . take the square root(s)
x = -3 ±5 = {-8, +2}
The two potential solutions are x = 2 and x = -8.