f(-9) means x is -9
Replace x with -9 and solve:
2/3(-9) - 6
Simplify:
-6 - 6 = -12
f(-9) = -12
 
        
             
        
        
        
Answer:
62
Step-by-step explanation:
this is because 62 might be 100%
 
        
                    
             
        
        
        
Answer:
64 cm²
Step-by-step explanation:
Area of a square: s²
s = 8 cm
(8)² = 64 cm²
 
        
                    
             
        
        
        
Answer:
x = ± 1 , x = ± 
Step-by-step explanation:
Let u = x² , then
 - 3x² + 2 = 0 , can be expressed as
 - 3x² + 2 = 0 , can be expressed as
u² - 3u + 2 = 0 ← in standard form
(u - 1)(u - 2) = 0 ← in factored form
Equate each factor to zero and solve for u
u - 1 = 0 ⇒ u = 1
u - 2 = 0 ⇒ u = 2
Change the variable u back to x
x² = 1 ( take square root of both sides )
x = ± 1
or
x² = 2 ( take square root of both sides )
x = ± 