Answer:
(-2,-3) and (3,2)
Step-by-step explanation:
sub in x-1 into y
x^2 + (x-1)^2 = 13
x^2 + (x-1)(x-1)=13
x^2 + x^2 -2x +1 = 13
2x^2 -2x-12=0
solve for x by factoring (quadratic formula, product sum etc..)
x= -2 and 3
plug in those values into y=x-1 and solve for y
 
        
                    
             
        
        
        
Answer:
   4x^2 -25
Step-by-step explanation:
The other factor of the difference of squares is the "conjugate" of the given one: (2x -5). Then their product is ...
   (2x +5)(2x -5) = (2x)^2 -(5)^2 = 4x^2 -25
 
        
                    
             
        
        
        
Answer: 60 
Step-by-step explanation:
It’s an equilateral triangle based on the congruent sides. 
 
        
             
        
        
        
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