Question

What is the vertex of (2x)(x-11)

Answer 1

Explanation:

let : f(x) =2x(x-11)

f(x) = 2x²-22x standard form when : a=2 and b= -22 and c=0

the fertex is : ( -b/2a , f(-b/2a))

-b/2a = -(-22) /4 = -11/4

calculate f(-11/4) = 2(-11/4)²-22(-11/4) =.......continu