Quadratics Quiz

Fill in the blanks to complete the square. 
x² -14x + ___ = (              )²

• 14, (x - 7)²

• 14, (x + 7)²

• 49, (x - 7)²

• 49, (x + 7)²

Tags

CCSS.HSA-REI.B.4B

Solve for x using the quadratic formula. 
2x² + 10x + 18 = 0

•  - 5 ± i√44 
  -----------------
      2

• -5 ± i √11
  ----------------
      2

• 5 ± √11
  --------------
     2

• -10 ± 2i√11
  ----------------
  2

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

Given y = a(x - r₁)(x - r₂). A parabola has roots at 4 and -3 with y-intercept of 36. Find a. 

• a = 4

• a = -3

• a = 3

• a = -1/3

Which of the following is equivalent to (x - 9)² ?

• x² + 81

• x² - 81

• x² + 18x - 81

• x² -18x + 81

Tags

CCSS.HSA.APR.C.4

Which answer choice describes  y = -3x² +7x - 2 accurately?

• opens up with a maximum

• opens up with a minimum

• opens down with a maximum

• opens down with a minimum 

Tags

CCSS.HSF-IF.C.7A

Which of the following represents a quadratic function?

• 1

• 3

• 2

• 5

• 1

• 3

• 2

• 5

• 4