Solve quadratic equations by square root

Solve quadratic equations by square root

8th Grade

5 Qs

quiz-placeholder

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Solve quadratic equations by square root

Solve quadratic equations by square root

Assessment

Quiz

Mathematics, English

8th Grade

Medium

Created by

Showkat Kazi

Used 7+ times

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5 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 x2=81x^2=81  

 {9,9}\left\{9,9\right\}  

 {9,10}\left\{9,10\right\}  

 {9,9}\left\{-9,-9\right\}  

 {9, 9}\left\{-9,\ 9\right\}  

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 x2=49x^2=49  

 {7, 7}\left\{7,\ 7\right\}  

 {7, 7}\left\{-7,\ -7\right\}  

 {7, 7}\left\{-7,\ 7\right\}  

 {7, 1}\left\{-7,\ 1\right\}  

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 x2=60x^2=60  

 {25, 25}\left\{2\sqrt{5},\ -2\sqrt{5}\right\}  

 {215, 215}\left\{-2\sqrt{15},\ 2\sqrt{15}\right\}  

 {230, 230}\left\{2\sqrt{30},\ -2\sqrt{30}\right\}  

 {25, 25}\left\{2\sqrt{5},\ -2\sqrt{5}\right\}  

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

 (x+2)2 = 81\left(x+2\right)^2\ =\ 81  

 {11, 5}\left\{-11,\ 5\right\}  

 {11, 5}\left\{-11,\ -5\right\}  

 {11, 5}\left\{11,\ 5\right\}  

 {9, 9}\left\{-9,\ 9\right\}  

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

 (2x +2)2 = 100\left(2x\ +2\right)^2\ =\ 100  

 {4, 6}\left\{-4,\ -6\right\}  

 {4, 6}\left\{4,\ -6\right\}  

 {10, 10}\left\{10,\ -10\right\}  

 {12, 10}\left\{12,\ -10\right\}