Question

What is the vertex of the parabola y=x^2-5?
a.(5,0) b.(-5,0) c.(0,5) d.(0,-5)

1).What are the roots of the quadratic equation x^2+x-20=0?
a.4 and 5 b.-4 and 5 c.2 and 10 d.2 and -10

2).How many real roots does the quadratic equation x^2+5x+7?
a.0 b.1 c.2 d.3

3).What is the quadratic function f(x) whose zeros are 2 and -7?
a.f(x)=x^2+5x-14 b.f(x)=-5x+14 c.f(x)=x^2-5x-14 d.f(x)=x^2+5x+14

4).What must be added to x^2-10x to make it a perfect square trinomial?
a.5 b.10 c.20 d.25

5).graph of g(x)=-x^2+1 opens______.
a.Upward b.To the left c.Downward d.The right

(please guys help me,thank you❤​)

Answer 1

Answer:

which class question is this please tell me

i am seeing this question first time

so please tell me