Quadratic Formula Standard Form

If the value of b² - 4ac ' is negative, then which of the following is true?

• There are two rational roots.

• There are two irrational roots.

• There are no real roots.

• The equation has a double root.

Tags

CCSS.HSA-REI.B.4B

ax²+bx+c=0  is the standard form of a quadratic equation.

• True

• False

Rewrite: x² + 9 = 7x in standard form.

• x² - 7x + 9 = 0

• x² + 7x + 9 = 0

• x² + 9 + 7x = 0

• x² + 9 - 7x = 0

Find b² - 4ac for a = 1 b = 3 c = 2

• 2

• 1

• -23

• 12

Tags

CCSS.HSA-REI.B.4B

Standard form of a quadratic equation

• y=x²

• y=ax²+bx+c

• y=mx+b

• y=x

In the quadratic equation:

2x² + 3x - 5 = 0,

the value of a is:

• 2

• 3

• 5

• -5

In the quadratic equation:

2x² + 3x - 5 = 0,

the value of c is:

• 2

• 3

• 5

• -5

For the quadratic equation:

x² - 3x - 5 = 0

, the value of b² - 4ac will be:

• -29

• 11

• -11

• 29

Tags

CCSS.HSA-REI.B.4B

x² + 6x + 9 = 0

For the quadratic equation above, what is the value of

b² - 4ac ?

• 0

• 36

• 72

• -24

Tags

CCSS.HSA-REI.B.4B

Rewrite: 5 + x² - 8x = 0 in standard form.

• x² - 8x - 5 = 0

• x² - 8x + 5 = 0

• x² + 8x - 5 = 0

• The equation is in Standard Form