What are the steps you would use to graph f(x)= -16x^2 + 60x + 16

X intercepts are (-1/4,0) and (4,0)

Question

What are the steps you would use to graph f(x)= -16x^2 + 60x + 16

X intercepts are (-1/4,0) and (4,0)

anonymous · Answer

Simplify   100x2-60x  -  16
Pulling out like terms :

 1.1     Pull out like factors :

   100x2 - 60x - 16  =   4 • (25x2 - 15x - 4) 

Trying to factor by splitting the middle term

 1.2     Factoring  25x2 - 15x - 4 

The first term is,  25x2  its coefficient is  25 .
The middle term is,  -15x  its coefficient is  -15 .
The last term, "the constant", is  -4 

Step-1 : Multiply the coefficient of the first term by the constant   25 • -4 = -100 

Step-2 : Find two factors of  -100  whose sum equals the coefficient of the middle term, which is   -15 .

     	-100	   +   	1	   =   	-99	
     	-50	   +   	2	   =   	-48	
     	-25	   +   	4	   =   	-21	
     	-20	   +   	5	   =   	-15	   That's it

anonymous · Answer

maybe?

bigbosssaint21 · Answer

how do you apply that to my problem?