U9L3 Complex Solutions

U9L3 Complex Solutions

10th - 12th Grade

10 Qs

quiz-placeholder

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U9L3 Complex Solutions

U9L3 Complex Solutions

Assessment

Quiz

Mathematics

10th - 12th Grade

Medium

CCSS
HSA-REI.B.4B, HSA.REI.B.4, HSN.CN.C.7

Standards-aligned

Created by

Mrs Smith

Used 6+ times

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Find the roots of the following quadratics:

 2x2+6x=112x^2+6x=11  

 {112,8}\left\{\frac{11}{2},8\right\}  

 {231, 31}\left\{-2\sqrt{31},\ -\sqrt{31}\right\}  

 {3+312, 3312}\left\{\frac{-3+\sqrt{31}}{2},\ \frac{-3-\sqrt{31}}{2}\right\}  

No Solutions

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Media Image
Solve for x: 
x = {-4, -1}
x = {-1, -4}
x = {2+i, 2-i}
x = {-2+i, -2-i}

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Express  225\sqrt{-225}  in terms of  ii  

 15i15i  

 15i-15i  

 i15i\sqrt{15}  

 i15-i\sqrt{15}  

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Solve the equation x2+8x+20=0x^2+8x+20=0  

 4±2i-4\pm2i  

 2i±42i\pm4  

 2±4i-2\pm4i  

 3±2i3\pm2i  

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 f(x)=x22x+17f\left(x\right)=x^2-2x+17  

 1±4i1\pm4i  

 4±i4\pm i  

 1±4i-1\pm4i  

 4±i-4\pm i  

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Find the roots:
 x2 +6x+13x^{2\ }+6x+13 

x = {-3 + 2i, -3 - 2i}

x = {7, 6}

x = 2 ± i√3

No solution

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Solve for x:
 x25x+8=0x^2-5x+8=0 


 x={5±i72}x=\left\{\frac{-5\pm i\sqrt{7}}{2}\right\} 

 x={5±i72}x=\left\{\frac{5\pm i\sqrt{7}}{2}\right\}  

 x={8±i72}x=\left\{\frac{8\pm i\sqrt{7}}{2}\right\}  

 x={5±572}x=\left\{\frac{5\pm\sqrt{57}}{2}\right\}  

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