TEST REVIEW: UNIT 2B SOLVING QUADRATIC EQUATIONS

MR. BIGSBY'S MATH WORLD

TEST REVIEW: UNIT 2B SOLVING QUADRATIC EQUATIONS

4/3/2016

26 Comments

Mr. Bigsby

4/4/2016 06:32:56 am

For full credit, explain what mistake you made on one of the problems you got wrong.

Example: On problem number 7 I did not find the correct factors of 35 that also add to equal 12.

Rose Warner

4/4/2016 01:52:07 pm

It's Not working it says I have to sing in

Rose Warner

4/4/2016 02:02:07 pm

4) it asked me to find the matching expression for the graph.
I said b which was y=(x+2)(x-4) even though those were the zeros. However I relized I forgot to change the sign. That make sense now

6)I did not simplify the radical of 180. I got the 2 times the radical of 9.
8) I also did not find the exact solution of x^2+2x-48

11) I did not under stand that complete p roublem

12c) I simplified wrong

Now the video was not working so I want off your example .

Also on 8and 9 you have me a check and a x so I did not know what to weight for those since the video would not play. Thanks so much Mr. Bigsby

Emily Ritzes

4/4/2016 02:55:52 pm

The video is not working!!!!

Emily Ritzes

4/4/2016 02:58:58 pm

on question 6 i forgot to put positive/negative in front of my answer

Hazel Montgomery-Walsh

4/4/2016 03:03:07 pm

Comment: The video is not working!! :(

Test Correction #11: The answer to where the parabola is at zero is 10. The factored form equation gives you the exact zeros, like we learned... so therefor, the zero would be at 10, since the numbers in the parenthesis were (x-10) and (x+10).

Amna

4/4/2016 03:20:18 pm

Do we get extra credit by saying our mistake?
Nice video
I messed up on question 6 cause I didn't write my positive and negative sign

Alexis Kahler

4/4/2016 05:09:52 pm

#1 i combined unlike terms :(
BTW literally all my mistakes could have been avoided but i think i was just overlooking it and was too nervous.
Question, for #11, when would be the right time to multiply -16 by (t-10)?

Mr. Bigsby

4/7/2016 12:26:45 pm

We would do the multiplication if trying to evaluate the equation. For instance if I asked you for the height (y) after 3 seconds (t), then you would plug in 3 for t and evaluate but subtracting 10 then multiplying by -16 and so on to find the value for y/height.

The test question asked when (t) was the object on the ground (y=0). So we set y=0 and solve for t. Or we use our knowledge of factored form to realize that (10,0) and (-10,0) are the x-intercepts of the problem.

Julianna

4/4/2016 06:43:57 pm

Problem #5
I forgot to add the + - after my answer

Maddox

4/5/2016 02:07:39 pm

For number 1 I rushed it and did the combining wrong. Also I never noticed the introduction. I like it

Ethan Anderson

4/5/2016 02:50:57 pm

cool video

Viola

4/5/2016 04:28:42 pm

don't know if it's a mistake but I did one question on the back page and didn't understand the rest 🤷 ¯\_(ツ)_/¯

Laiza

4/5/2016 06:55:52 pm

Bruhh....Great video !!!👌🏼👌🏼

Georgia

4/6/2016 04:20:19 am

For number 6 I forgot to put the positive/negative sign infront of my answer.

Krissy

4/6/2016 05:10:52 am

Kendle

4/6/2016 05:12:33 am

Kendle

4/7/2016 07:50:36 pm

I circled the wrong one for # 3 😭😭😭

Jaelyn

4/6/2016 12:22:18 pm

Jaelyn

4/6/2016 12:27:13 pm

On the 3rd to last question I rushed through it and I should of solved it right so I got the whole equation wrong

Erica

4/6/2016 01:31:32 pm

On the first one, I think I forgot the 3x squared. Oops.

HAMMY

4/6/2016 01:34:22 pm

I commented

Sarina

4/6/2016 02:58:39 pm

I see what I did wrong.

Justin

4/7/2016 04:27:04 am

I am just here for the comments and i realized the simple mistakes i made

Zoe

4/7/2016 04:51:24 pm

Oh i see what i did wrong oops

Justin

4/11/2016 01:40:27 pm

I got number 10 wrong because i didnt use the opposite number when it was in parenthesis

TEST REVIEW: UNIT 2B SOLVING QUADRATIC EQUATIONS

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