Question

What are the x-intercepts of the quadratic function?

y = –x^2 + 2x – 1

A.
2 and 1

B.
–2 and 1

C.
2 and –1

D.
1

Answer 1

Factor –x2 + 2x – 1 out

Answer 2

I mean factor, not factor out

Answer 3

The x-intercepts is where y = 0. Take your equation and set it equal to 0.

Answer 4

(-x-1)(x+1)=0

Answer 5

so what value of x is going to be 0?

Answer 6

@awkwardpanda can you help meh?

Answer 7

No, it is -1, (so that y equals to 0 )

Answer 8

So its C?

Answer 9

In your question is it (–x)^2 or -(x)^2?
I though it is the second one, right?

Answer 10

Idk

Answer 11

its just -x^2

Answer 12

so it is only x to the second power, not -x to the second power.

(first power and than -)

Answer 13

My bad it is 1.
D

Answer 14

There we go, haha (:

Answer 15

Aim it's 1.

Answer 16

I factored incorrexctly it is (-x+1)(x-1), not (-x-1)(x+1)

Answer 17

Yes it is !, the answer is D

Answer 18

Oh ok i thought u said -1

Answer 19

100% sure

Answer 20

it is 1

Answer 21

Because it would be (-1) right? which makes it 1.