Unit 8 Lesson 10 Quadratic Formula

Identify a, b and c in the quadratic equation: $2x^2-3x-5=0$   

• a = 2 , b = 3, c = -5

• a = 2, b = -3, c = 5

• a = 2, b = -3, c = -5

• a = -2, b = 3, c = 5

 $m^2-5m-14=0$  

• x = 7 and -2

• x = 7 and 2

• x = -7 and -2

• x = -7 and 2

 $x^2+4x+3=0$  

• x = 1 and -3

• x = -1 and -3

• x = -1 and 3

• x = 1 and 3

What method would you use to solve $x^2-16=0$   

• Factoring Method

• Completing the Square Method

• Quadratic Formula

• Square Root Method

Identify the values of A, B, and C

5x² + x - 18 = - 9x + 3x²

• A=2, B=10, C=-18

• A=5, B=1, C=-18

• A=8, B=-8, C=-18

• A=2, B=9, C=-18

Identify the values of A, B, and C

3m² - 14 = 11m

• A=3, B=-11, C=-14

• A=3, B=-14, C=11

• A=3, B=11, C=-14

• A=3, B=-14, C=11

Use the quadratic formula to find the solutions for

y = -x² - 5x + 12

• No Real Solution

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Solve using the quadratic formula...

9x² = 4 + 7x

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• No solution

Use the quadratic formula to find the solutions for

y = 2x² - 9x + 5

• -8.14 and 6.14

• -4.07 and 3.07

• 3.9 and 0.6

• ZERO solutions