Solving Quadratic Equations

Solve the following quadratic equation...

x² - 13x + 30 = 0

• x = 10

  x = 3

• x = -10

  x = -3

• x = 5

  x = 6

• x = -5

  x = -6

Tags

CCSS.HSA-REI.B.4B

Solve the following quadratic equation...

x² - 14x + 24 = 0

• x = 12

  x = 2

• x = 4

  x = 6

• x = 3

  x = 8

• x = 1

  x = 24

Tags

CCSS.HSA-REI.B.4B

9k² = 225

• 4
• 4, -4
• 25, -25
• -5, 5

Tags

CCSS.8.EE.A.2

(x - 7)² = 5

• x = 7-√5
• x = 7+√5
• x = √5
• x = 7±√5

Tags

CCSS.HSA-REI.B.4B

4(x+9)²=24

• {-9+√6,-9-√6}
• {3,-3}
• {3}
• so solution

Tags

CCSS.HSA-REI.B.4B

Solve  $36x^2+169\ =\ 0$  .

•  $x=\pm\frac{6}{13}i$  

•  $x=\pm\frac{6}{13}$  

•  $x=\pm\frac{13}{6}i$  

•  $x=\pm\frac{13}{6}$  

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

Solve  $x^2-4x+18=0$  .

•  $x=-2\pm i\sqrt{14}$  

•  $x=-2\pm\sqrt{14}$  

•  $x=2\pm i\sqrt{14}$  

•  $x=2\pm\sqrt{14}$  

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

Solve  $4x^2+5x+2=0$  .

•  $x=\frac{5}{8}\pm\frac{\sqrt{7}}{8}$  

•  $x=-\frac{5}{8}\pm\frac{\sqrt{7}}{8}i$  

•  $x=-\frac{5}{8}\pm\frac{\sqrt{7}}{8}$  

•  $x=\frac{5}{8}\pm\frac{\sqrt{7}}{8}i$  

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

Solve $x^2+x=-1$  .

•  $x=-\frac{1}{2}\pm\frac{\sqrt{3}}{2}i$  

•  $x=-\frac{1}{2}\pm\frac{\sqrt{5}}{2}i$  

•  $x=\frac{1}{2}\pm\frac{\sqrt{3}}{2}i$  

•  $x=\frac{1}{2}\pm\frac{\sqrt{5}}{2}i$  

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

What are the solutions of the equation  $x^2=23+2x$  ?

•  $x=-1\pm2\sqrt{6}$  

•  $x=1\pm2\sqrt{6}$  

•  $x=-1\pm\sqrt{22}$  

•  $x=1\pm\sqrt{22}$  

Tags

CCSS.HSA-REI.B.4B