Solving Quadratics

 

Complete the square.

x² + 6x + ____

• -9

• 12

• 36

• 9

Tags

CCSS.HSA-REI.B.4B

 Decide on the best method:

x² - 3x - 54 = 0

• Square root Method

• Factor

  Method

• Quadratic Formula

• Complete the square

Tags

CCSS.HSA-REI.B.4B

 Solve x^2 - 3x - 4 = 0 using the quadratic formula.

• x = 4 and 1

• x = -4 and 1

• x = -4 and -1

• x = 4 and -1

Tags

CCSS.HSA-REI.B.4B

Decide on the best method:

2x² - 7x + 2 = 0

• Square root

• Quadratic Formula

• Factor Method

• Completing the Square

Tags

CCSS.HSA-REI.B.4B

What is the first step to solving this equation by completing the square?

a² + 10a + 21 = 0

• Divide 10 by 2 and add the result to both sides

• Subtract the 21

• Add a² and 10a together

• Set the equation equal to zero

Tags

CCSS.HSA-REI.B.4B

Which of the following equations matches standard form of a quadratic?

• y = a(x - h)² + k

• y = mx + b

• ax + by = c

• y = ax² + bx + c

Decide on the best method:

3a² + 13a = -4

• Quadratic Formula

• Factor Method

• Square Root Method

• Complete the Square

Tags

CCSS.HSA-REI.B.4B

 Decide on the best method:

x² + 2x = -9

• Complete the Square

• Quadratic Formula

• Square Root Method

• Factor Method

Tags

CCSS.HSA-REI.B.4B

True or false:

The solutions, roots, x-intercepts, and zeros of a quadratic equation are all the same thing.

• True

• False, they are all different

• False, because the solution and root are the same but the x-intercept and zero are different

• False, because the x-intercept and root are the same but the zero and solution are different

 What is another word for zeros?

• axis of symmetry

• y-intercepts

• roots

• vertex