Finding the Roots of Quadratic Equations

What are the roots of the function
f(x)= (x - 2)(x + 3)?

• x = - 2 or x = 3

• x = 2 or x = -3

• The are no real roots

• x = 2 or x = 3

Tags

CCSS.HSF-IF.C.7C

What are the zeros of the quadratic function?
y = x² - 2x - 15

• x = -2
  x = -15

• x = -3
  x = 5

• x = 3
  x = -5

• x = 1
  x = -16

Tags

CCSS.HSA-SSE.B.3B

CCSS.HSF-IF.C.8A

What are the green dots called?

• axis of symmetry

• vertex

• parabola

• roots or x-intercepts

Tags

CCSS.HSF-IF.C.7A

Factor: x²+16x+64
WHAT TWO NUMBERS MULTIPLY TO 64
AND ADD UP TO 16? 

• (x+8)(x+8)

• (x+2)(x+32)

x = { ​ (a)   }

• -2, 1

• 2, -1

• (-2, 0)

• (1, 0)

• (2, 0)

• (-1, 0)

• (0, -32)

• (-0.5, -36)

Tags

CCSS.HSA-REI.B.4B

• m=±81
• m=±9
• m=±3
• No real solution

Tags

CCSS.8.EE.A.2

Tags

CCSS.HSA-REI.B.4B

What are the x- intercepts?
These are also known as the roots, zeroes and solutions!! 
These are the points where the parabola goes through the X - AXIS

• x= 0 and x= -4

• x= 0 and x= 4

• y= 0

• x= 2

Tags

CCSS.HSF-IF.C.7A

Which equation below is a quadratic?

• y=9x+5

• y=3x²-6

• y=5x³+6

• x=3^x

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