Answer:
x = ± 
, x = ± i
Step-by-step explanation:
f(x) = 
- x² - 2
to find the zeros , equate f(x) to zero , that is
- x² - 2 = 0
using the substitution u = x² , then
u² - u - 2 = 0 ← in standard form
(u - 2)(u + 1) = 0 ← in factored form
equate each factor to zero and solve for u
u - 2 = 0 ⇒ u = 2
u + 1 = 0 ⇒ u = - 1
convert u back into terms of x
x² = 2 ( take square root of both sides )
x = ±
x² = - 1 ( take square root of both sides )
x = ± 
= ± i
Answer:
i believe the fist one is a and second is b
Step-by-step explanation:
lol hope it helped u
Answer:
<u>The equations system has multiple solutions for x, y.</u>
Step-by-step explanation:
Let's solve for x and y this equations system:
We can observe that the second equation is a simplification of the first (divided by 2) and therefore, the system has multiple solutions for x and this way:
x y
-27/5 -5
-21/5 -4
-3 -3
-9/5 -2
-3/5 -1
3/5 0
9/5 1
3 2
21/5 3
27/5 4
33/5 5
Answer:
$7821.74
Step-by-step explanation:
Eva invests $6400 in a new savings account which earns 3.4% annual interest, compounded continuously.
We have to find the value of her investment after 6 years,
Now, using the formula for the compound interest we can get the value of her investment.
So, it will be 
Dollars (Approximate)
{Rounded to the nearest cent} (Answer)
