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:
-31p
Step-by-step explanation:
........
Answer:
i think its 63
3:4
84 divided by 4 equals 21, so then you multiply 3 by 21 and get 63
Answer:
<h2>f(-2) = 12.5</h2>
Step-by-step explanation:

f(-2) → put t = -2 to the equation of the function:

Use 

Answer:
100<x<500
Step-by-step explanation:
The third side cannot exceed the others added up so x is less than 500, due to the laws of triangles.
If you subtract 300-200, you get 100, so x has to be greater than 100.
x is greater than 100 but less than 500
Therefore the answer is...
100<X<500
The laws of triangles state that a triangle has to be greater than the other two edges subtracted, and less than the other two edges added.
I hope this helps!!!