Answer:
4
Step-by-step explanation:
From the chioces give it would be 4
But it is actually 8
 
        
             
        
        
        
Answer:
c
Step-by-step explanation:
Calculate the slope m using the slope formula
m = (y₂ - y₁ ) / (x₂ - x₁ )
with (x₁, y₁ ) = (- 8, - 3) and (x₂, y₂ ) = (2, 3)
m =  =
 =  =
 =  → c
 → c
 
        
             
        
        
        
a. Answer:  m = 2
<u>Step-by-step explanation:</u>
f(x) = x² - 4x + 1
f(m) = m² - 4m + 1 = -3
          m² - 4m + 4 = 0
          (m - 2)(m - 2) = 0
                m = 2
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b. Answer:  k = 2 and k = 5
<u>Step-by-step explanation:</u>
f(x) = x² - 7x + 14
f(k) = k² - 7k + 14 = 4
         k² - 7k + 10 = 0
         (k - 2)(k - 5) = 0
         k = 2   k = 5
 
        
             
        
        
        
4 (e)  
sin^8 x - cos^8 x
= (sin^4 x + cos^4 x)(sin^4 x - cos^4 x)
= (sin^4 x + cos^4 x)(sin^2 x - cos^2x)(sin^2 x +cos^2 x)
=  (sin^4x + cos^4 x)( sin^2 x- cos^2 x)
Sorry I cant do 4 (d).