Factoring Quadratic Equations - 11.11.21 - Alg II - Videtich

Factor:  x² + 13x + 30

• (x + 3)(x + 10)
• (x + 5)(x + 6)
• (x + 2)(x + 15)
• (x + 1)(x + 30)

Factor: 25x² - 9

• (5x + 3)(5x - 3)

• (x + 5)(x - 3)

• (x - 3)(x + 5)

• (5x + 3)(3x + 5)

Which of the following is an example of quadratic equations?

• x + 9 = 0

• x + y =12

• x³ + 5x² - 14 =0

• x² - 2x = 7

Determine the values of
a, b, and c for
the quadratic equation: 
4x² – 8x = 3

• a = 4, b = -8, c = 3
• a = 4, b =-8, c =-3
• a = 4, b = 8, c = 3
• a = 4, b = 8, c = -3

Solve by factoring:

n² - 2n = 0

• n = 2 and 0

• n = -2 and 0

• n = 2

• n = 0

Find the zeros of this quadratic.

• b=4/5, b=3
• b=4, b=-3
• b=1/5, b=3
• b=4/5, b=-3

What does FOIL stand for?

• Failing Only in Latin

• Farming Only in Lakewood

• First Outside Inside Last

• Fresh Only in Lakes

Factor completely: 
3x² + 18x +15
Hint: Factor GCF first.

• 3(x² + 6x + 5)
• (x + 5)(x + 1)
• 3(x + 5)(x + 1)
• Prime

Solve the equation by factoring:
x² + x - 20 = 0

• x = -5 and 4
• x = 4 and 5
• x = 5 and -4
• x = -4 and -5

What is another name for the x-intercepts of a quadratic?

• y-intercept
• Zeros
• x-axis
• They don't have another name