Consider the function f (x) = 10x2 + 20. - 11

What is the vertex of the function

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)