Answer:
 5x² - 10x - 15 = 0
Step-by-step explanation:
Given that the roots are x = 3 and x = - 1, then the factors are
(x - 3) and (x + 1) and the quadratic is the product of the factors, that is
f(x) = a(x - 3)(x + 1) ← a is a multiplier
Here a = 5, thus
f(x) = 5(x - 3)(x + 1) ← expand factors using FOIL
      = 5(x² - 2x - 3) ← distribute parenthesis by 5
      = 5x² - 10x - 15
Thus equation is
5x² - 10x - 15 = 0
 
        
             
        
        
        
Answer:
-2(x^2+15)
Step-by-step explanation:
f(x) = −2(x − 4)^2 + 2.
Expanding (x-4)^2
(x-4)(x+4)
x(x+4)-4(x+4)
x^2+4x-4x-16
x^2-16
F(x) = -2(x^2-16)+2
-2x^2-32+2
-2x^2-30
-2(x^2+15)
 
        
             
        
        
        
Answer:
The amount of apples is the Xs and The cost is the Ys
Step-by-step explanation:
 
        
             
        
        
        
8505. You would do 63 times 135 to get 8505
        
                    
             
        
        
        
27-28 days, the actual answer is 27.4285714 days, but it depends on how you’re instructed to round your answer