M3 U2L6 Solving Polynomial Equations

Solve

 $x^4-x^2-56=0$  
Choose all that apply.

•  $\pm i\sqrt{7}$  

•  $\pm2\sqrt{2}$  

•  $\pm5i$  

•  $-3\ mult.\ 2$  

Tags

CCSS.HSA-REI.B.4B

Solve

 $x^5-125x^2=0$  
Choose all that apply.

•  $\pm5i$  

•  $\frac{-5\pm5i\sqrt{3}}{2}$  

• 5

•  $0\ mult.\ 2$  

Tags

CCSS.HSA-REI.B.4B

Solve

 $x^3-64=0$  
Choose all that apply.

• 4

•  $-2\pm2i\sqrt{3}$  

• -4

•  $\frac{-16\pm i\sqrt{48}}{2}$  

Tags

CCSS.8.EE.A.2

Solve

 $x^5+11x^3+18x=0$  
Choose all that apply.

•  $\pm3i$  

•  $\pm i\sqrt{2}$  

• 0

•  $\pm9$  

•  $\pm2$  

Tags

CCSS.HSA-REI.B.4B

Solve

 $x^3-2x^2+5x=0$  
Choose all that apply.

•  $\frac{2\pm4}{2}$  

•  $-1\pm\sqrt{-4}$  

• 0

•  $1\pm2i$  

Tags

CCSS.HSA-REI.B.4B

Solve

 $2x^4-x^2-45=0$  
Choose all that apply.

•  $\pm\frac{3i\sqrt{2}}{2}$  

•  $\pm5$  

•  $\pm\sqrt{5}$  

•  $\pm\frac{3i}{2}$  

Tags

CCSS.HSA-REI.B.4B

Which equation has -2 as a solution?

• $x^2+6x+8=0$

• $x^2+x-6=0$

• $2x^2-2=0$

• $x^4-3x^2-10$

Tags

CCSS.6.EE.B.5

Which equation has

 $\pm1$  as solutions?

•  $x^4+2x^2-3=0$  

•  $x^2+2x+1=0$  

•  $x^2-2x+1=0$  

•  $x^2-x=0$  

Tags

CCSS.HSA-REI.B.4B

Which equation has 0 as a solution?

• $x^2-16=0$

• $4x^2-36x=0$

• $2x+5=0$

• $x^2-2x+5=0$

Tags

CCSS.HSA-REI.B.4B

Which equation has

 $\pm2i\sqrt{2}$  as solutions?

•  $x^2+4=0$  

•  $2x^2-2x=0$  

•  $x^2+8=0$  

•  $2x^2+4x+8=0$  

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7