F(x) ==x² + 10x-a
What is the vertex?

of

x

x

and

y

y

.

f

(

x

)

=

x

2

−

10

x

f(x)=x2-10x

Rewrite the equation in vertex form.

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y

=

(

x

−

5

)

2

−

25

y=(x-5)2-25

Use the vertex form,

y

=

a

(

x

−

h

)

2

+

k

y=a(x-h)2+k

, to determine the values of

a

a

,

h

h

, and

k

k

.

a

=

1

a=1

h

=

5

h=5

k

=

−

25

k=-25

Find the vertex

(

h

,

k

)

(h,k)

.

(

5

,

−

25

)

(5,-25)

c

-by-step explanation:

it would be c