Answer:
second option
Step-by-step explanation:
Given
 + 6x² + 5 = 0
 + 6x² + 5 = 0
let u = x², then
u² + 6u + 5 = 0 ← in standard form
(u + 1)(u + 5) = 0 ← in factored form
Equate each factor to zero and solve for u
u + 1 = 0 ⇒ u = - 1
u + 5 = 0 ⇒ u = - 5
Change u back into terms of x, that is
x² = - 1 ( take the square root of both sides )
x = ±  = ± i ( noting that
 = ± i ( noting that  = i ), and
 = i ), and
x² = - 5 ( take the square root of both sides )
x = ±  = ±
 = ±  = ±
 = ±  ×
 ×  = ± i
 = ± i
Solutions are x = ± i and x = ± i
 
        
             
        
        
        
This is the concept of geometry, given that the angle 52 and (2x) have been subtended by a circle, then:
2x=2(52)
2x=104
solving for x we get:
x=104/2
x=52
the answer is x=52°
        
             
        
        
        
Answer: Total cost would be $53. 24 including tax which is $3.25
Step-by-step explanation:
 
        
             
        
        
        
not possible because the area of a square is always a square of it's length and a square cannot be a prime number