Solving Quadratic Equations by Different Methods

Solve 16a² - 9 = 0

• a = ^-3/₄, ³/₄

• a = ^-4/₃, ⁴/₃

• a = 3i/4, -3i/4

• a = 3/4

Tags

CCSS.HSA-REI.B.4B

9k² = -225

• 5

• 5i

• 5i, -5i

• -5, 5

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

X² - 3 =6X + 10

• No Solution

Tags

CCSS.HSA-REI.B.4B

If b²-4ac is positive, the quadratic equation has:

• Two real solutions that are different

• Two imaginary solutions that are different

• A real double solution

• An imaginary double solution

Tags

CCSS.HSA-REI.B.4B

If b²-4ac is negative, the quadratic equation has:

• Two real solutions that are different

• Two imaginary solutions that are different

• A real double solution

• An imaginary double solution

Tags

CCSS.HSA-REI.B.4B

If b²-4ac is 0, the quadratic equation has:

• Two real solutions that are different

• Two imaginary solutions that are different

• A real double solution

• An imaginary double solution

Tags

CCSS.HSA-REI.B.4B

What is the discriminant of the quadratic formula?

• b²-4a

• b²-4ac

• b-4ac

• b²-ac

Tags

CCSS.HSA-REI.B.4B

Solve -2x² + 4x = 9

• (2 - i√14)/2   ,   (2 + i√14)/2

• (2 - i√-56)/2   ,   (2 + i√-56)/2

• (2 - i√-14)/2   ,   (2 + i√-14)/2

• (2 - √14)/2   ,   (2 + √14)/2

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

Solve for x: 

• x = {-4, -1}

• x = {-1, -4}

• x = {2+i, 2-i}

• x = {-2+i, -2-i}

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

• x = 1 and x = -7

• x = -7 and x = -1

• x = -5 and x = 2

• x = -2 and x = 5

Tags

CCSS.HSA-REI.B.4B