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Quadratic inequality q Watch

1. Solve: , Answer q is not equal to 2

My working:

-> I've square rooted at this point

I'm only getting one solution, so I can't sketch it, why is it not equal to two? Is my answer correct?
2. (Original post by Magenta96)
Solve: , Answer q is not equal to 2

My working:

-> I've square rooted at this point

I'm only getting one solution, so I can't sketch it, why is it not equal to two? Is my answer correct?
You can sketch it. Show the quadratic with the minimum just touching the x axis ...
3. (Original post by Mr M)
You can sketch it. Show the quadratic with the minimum just touching the x axis ...
Ok, so should I just draw a graph with the minimum at (2,0), and say the one solution is at q > 2?
4. (Original post by Magenta96)
Ok, so should I just draw a graph with the minimum at (2,0), and say the one solution is at q > 2?
I don't like your squaring rooting step at all.

Draw

Write down the one value where y = 0.

Note y is never less than 0.

Knowing this when is y > 0 ?
5. (Original post by Magenta96)
Solve: , Answer q is not equal to 2

My working:

-> I've square rooted at this point

I'm only getting one solution, so I can't sketch it, why is it not equal to two? Is my answer correct?
For the square root
6. (Original post by Mr M)
I don't like your squaring rooting step at all.

Draw

Write down the one value where y = 0.

Note y is never less than 0.

Knowing this when is y > 0 ?
y is zero at x = 2, and y is > 0 at x < 2 and x > 2
7. (Original post by Magenta96)
y is zero at x = 2, and y is > 0 at x < 2 and x > 2
Yes.

You can write as an alternative to and .
8. (Original post by Mr M)
Yes.

You can write as an alternative to and .
Thank you!
9. (Original post by Magenta96)
Thank you!
You are welcome.

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