![subject](/tpl/images/cats/mat.png)
Mathematics, 08.07.2019 18:30 rebecca7415
Lisa solved 3x2 + 1 = 28 as shown. 3x2 + 1 = 28 3x2 = 27 x2 = 9 she concluded that the solutions to this quadratic equation are x = -9 or x = 9. using a complete sentence, explain what mistake she made
![ansver](/tpl/images/cats/User.png)
Answers: 1
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 23:40
Me d is also an option but i couldn't get it in the picture
Answers: 2
![question](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 00:30
If m_b=mzd= 43, find mzc so that quadrilateral abcd is a parallelogram o 86 137 o 129 43 description
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 00:30
Parallelogram rstu is a rhombus. m∠r = 120° what is m∠t = 120 (what is m∠rsu? )
Answers: 2
You know the right answer?
Lisa solved 3x2 + 1 = 28 as shown. 3x2 + 1 = 28 3x2 = 27 x2 = 9 she concluded that the solutions to...
Questions
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 27.10.2020 14:00
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/en.png)
English, 27.10.2020 14:00
![question](/tpl/images/cats/mat.png)
Mathematics, 27.10.2020 14:00
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 27.10.2020 14:00
![question](/tpl/images/cats/en.png)
English, 27.10.2020 14:00
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/en.png)
English, 27.10.2020 14:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mkx.png)
Arts, 27.10.2020 14:00
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 27.10.2020 14:00
![question](/tpl/images/cats/himiya.png)
Chemistry, 27.10.2020 14:00
![question](/tpl/images/cats/mkx.png)
Arts, 27.10.2020 14:00
![question](/tpl/images/cats/en.png)
English, 27.10.2020 14:00
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 27.10.2020 14:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/geografiya.png)
![question](/tpl/images/cats/en.png)
English, 27.10.2020 14:00