# SOLVING QUADRATIC EQUATION

## Quiz by Ariston Plantilla

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- Q1
Solve the quadratic equation:

**x**^{2 }- 4x - 21 = 0^{ }B.) x = 8, x = 6

C.) x = -4, x = 3

A.) x = -3, x = 7

D.) x = -8, x = 6

60s - Q2
Solve quadratic equation by factoring:

**3x² + 33x + 30 = 0**x = 1, x = -10

x = -1, x = 10

x = 1, x = 10

x = -1, x = -10

60s - Q3
Solve quadratic equation:

**x² + 2x - 3 = 0**x = 1, x = -3

x = 3, x = 2

x = -2, x = 3

x = -1, x = 3

60s - Q4
Solve the quadratic equation by factoring:

**x² + 2x + 25 = 11x + 5**x = 5, x = -4

x = -5, x = 4

x = 5, x = 4

x = -5, x = -4

60s - Q5
Solve the quadratic equation:

**x**^{2 }- 9x + 14 = 0x = 2, x = 7

x = 2, x = -7

x = -2, x = 7

x = -2, x = -7

60s - Q6
Solve quadratic equation by extracting square roots:

**3t² = 12**t = 4, t = 3

t = 4, t = -4

t = -2, t = 6

t = 2, t = -2

60s - Q7
Calculate roots of quadratic equation:

**x² - x - 6 = 0**x = 3, x = 2

x = -3, x = 2

x = 3, x = -2

x = -3, x = -2

60s - Q8
Calculate roots of quadratic equation

**x² + 5x - 50 = 0**x = 9, x = 1

x = -9, x = 1

x = -3, x = 1

x = 5 x = -10

60s - Q9
Find the roots of the following quadratic equation by factoring:

**x² - 3ax + 2bx - 6ab = 0**x = 3a, x = -2b

x = -3a, x = 2b

x = 2a, x = -3b

x = -2a, x = 3b

60s - Q10
Calculate roots of quadratic equation:

**t² -2t + 1 = t + 5**t = 8, t = 1

t = 4, t = -2

t = -1, t = 4

t = 2, t = -4

60s