Answer :
Answer:
Step-by-step explanation:
f(2)=2²-4(2)-5
f(x)=x²-4x-5
=x²-4x+4-4-5
=(x-2)²-9
vertex is (2,-9)
y co-ordinate of the vertex is -9
Answer:
Step-by-step explanation:
f(2)=2²-4(2)-5
f(x)=x²-4x-5
=x²-4x+4-4-5
=(x-2)²-9
vertex is (2,-9)
y co-ordinate of the vertex is -9