Step-by-step explanation:
All three sides are equal, so this is an equilateral triangle.
 
        
                    
             
        
        
        
Answer:
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Step-by-step explanation:
  
The factors of 42 : ±1 , ±2 , ±3 , ±6, ±7, ±14, ±21 , ±42 
<u>Using trial and error method we will find the first root of the polynomial.</u>
1 : ( 1 )³ - 10 ( 1 )² - 53 ( 1 ) - 42 
      1 - 10 - 53 - 42  ≠ 0
    Therefore 1 is not a root
-1 : ( -1 )³ - 10 (- 1 )² - 53 (- 1 ) - 42 
       - 1 - 10 + 53 - 42
        53 - 53 = 0
Therefore - 1 is a root of the polynomial.
Therefore ( x + 1) is a factor.
<u>Now by long division or by using synthetic division we can find other factors.</u>
<u>Synthetic Division :</u>
                              -1 | 1      -10       -53      - 42
                                 | 0     - 1          11          42
                                 |______________________
                                   1      - 11       - 42        0
Therefore , 
 ------ ( 1 )
  ------ ( 1 ) 
<u>Next further factorize x² - 11x - 42</u>
    x² - 11x - 42
= x² -  14x + 3x - 42
=x(x - 14) + 3 (x - 14)
=(x + 3 )(x - 14)
Therefore ,

 
        
             
        
        
        
Answer: total comes to 4X - 12Y + 4 
Step-by-step explanation: