Answer:
- no real solutions
- 2 complex solutions
Step-by-step explanation:
The equation can be rearranged to vertex form:
x^2 -4x = -5 . . . . . . . . . subtract 4x
x^2 -4x +4 = -5 +4 . . . . add 4
(x -2)^2 = -1 . . . . . . . . . show the left side as a square
x -2 = ±√-1 = ±i . . . . . . take the square root; the right side is imaginary
x = 2 ± i . . . . . . . . . . . . . add 2. These are the complex solutions.
_____
<em>Comment on the question</em>
Every 2nd degree polynomial equation has two solutions. They may be real, complex, or (real and) identical. That is, there may be 0, 1, or 2 real solutions. This equation has 0 real solutions, because they are both complex.
Other method.
Enter the value of x for each equation and check the equality of the pages of the equation
<h3>It'd be C. To find mean, you first add all the terms, than divide by how many terms there were. 12+8+7+10+8+8+10=63, and there are 7 terms, so 63÷7=9.</h3>
Answer:
14
Step-by-step explanation:
Answer:
Option B, 14.6 units
Step-by-step explanation:
<u>Step 1: Find the distance of AB</u>
<u />
or 2.83...
<u>Step 2: Find the distance of BC</u>
<u />
or 4.47...
<u>Step 3: Find the perimeter</u>
<em>AB is the same as AD and BC is the same as DC</em>
<em />
14.6 units
Answer: Option B, 14.6 units
