Review of Solving Quadratics

Solve by taking square roots:
k² - 6 = 43

• k = √37
• k = 37 or - 37
• k = 7, k = -7
• no solution

Tags

CCSS.HSA-REI.B.4B

Solve by taking square roots:
3 + 9r² = 12

• r = 0
• no solution
• r = 3, r = -3
• r = 1, r = -1

Tags

CCSS.HSA-REI.B.4B

Solve the equation (x + 3)² = 49.

• x = -7, 7

• x = 4, -10

• x = -4 +- √7

• x = 10, -4

Solve by factoring:  4x² + 11x - 3 = 0

• x = -3/4 and x = -1
• x = 4 and x = 3
• x = 1/4 and x = -3
• x = -1/4 and x = 3

Tags

CCSS.HSA-REI.B.4B

Solve
6x² + 17x + 12 = 0

• x = -4/3, x = -3/2
• x = 9, x = 8
• x = 4, x = 3
• x = -4, x = -3

Tags

CCSS.HSA-REI.B.4B

Solve by factoring.

x² + 12x + 20 = 0

x =

• 2, 10

• -2, -10

• 2, -10

• -2, 10

• No solution

Use the quadratic formula to find the solutions for

y = -x² - 5x + 12

• No Real Solution

• 
• 
• 

Tags

CCSS.HSA-REI.B.4B

Solve using the quadratic formula.
2x² - 9x - 35 = 0

• x = 7/2, x = -6
• x = -5/2, x =5
• x = -3/7, x =6
• x = -5/2, x = 7

Tags

CCSS.HSA-REI.B.4B

Solve:

 $6x+9=2x^2$  

•  $\frac{3\pm3\sqrt{3}}{2}$  

•  $\frac{2\pm2\sqrt{3}}{4}$  

•  $\frac{6\sqrt{3}}{4}$  

•  $\frac{3+3\sqrt{3}}{4}$  

Solve:

 $x^2-2x+5=0$  

•  $x=3,\ x=-1$  

•  $1\pm2i$  

•  $1\pm\sqrt{6}$  

•  $x=-3,\ x=1$