Answer:
1) (2x + 2)(x + 2)
2)  2(x + 1)(x - 1)
3) (x^2 + 3)(x^2 - 3) 
4) 2x(x + 5)(x - 2)
5) (5x + 2y)(5x - 2y)
Step-by-step explanation:
1)
2x^2 + 6x + 4
= 2x^2 + 4x + 2x + 4
= 2x(x + 2) + 2(x + 2)
= (2x + 2)(x + 2)
2) 
2x^2 - 2
= 2(x^ 2 - 1) (The difference of two squares)
= 2(x + 1)(x - 1)
3) 
x^4 - 9 (The difference of two squares)
=(x^2 + 3)(x^2 - 3) 
4) 
2x^3 + 6x^2 - 20x
= 2x(x^2 + 3x - 10)
= 2x(x + 5)(x - 2)
5)
25x^2 - 4y^2         (The difference of two squares)
= (5x + 2y)(5x - 2y)
  
        
             
        
        
        
Use the app Socratic it helps!!
        
             
        
        
        
Answer:
Hii, okay so the answer is, -3x^3-9x^2-1
Hope this helps! 
Step-by-step explanation:
 
        
             
        
        
        
Answer:
y = (-2/3)x-3
Step-by-step explanation:
Hello:
equation is the line is : y = ax+b        a is a slope
 y = (-2/3)x+b
passing through the point (−3;−1) :   -1 =(-2/3)(-3)+b    so : b = -3
y = (-2/3)x-3
second solution : you can verify (-3 ; -1) in the equation : y = (-2/3)x-3
 
        
             
        
        
        
The answer to this is a=3