Answer:
Step-by-step explanation:
hello :
f(x) = 10x²+20x-11 Completing The Square
f(x) = 10(x²+2x)-11 = 10((x²+2x+1)-1)-11
f(x) =10((x+1)²-1)-11
f(x)= 10(x+1)²-21...vertex form when the vertex is : (-1 ; -21)
3/8-12/8= -9/8, 9/16-12/16= -3/16, -18/16--3/16= --21/16 I think this is correct
Answer:
Step-by-step explanation:
Square Root of 85
You add all of that up and you will get 56320 and divided by 11 then u get 5120.