Solving Quadratic Four Ways

The discriminant is

• aX²  + bX  +  c

• b - 4ac

• b² - 4ac

• b² + 4ac

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CCSS.HSA-REI.B.4B

What is the discriminant of -2x² − x − 1 = 0

• 76

• -7

• 9

• none of these

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CCSS.HSA-REI.B.4B

• Solving Quadratic Equation by Using Quadratic Formula

• Solving Quadratic Equation by Factoring

• Solving Quadratic Equation by Extracting Square Roots

• Solving Quadratic Equation by Completing the Square

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CCSS.HSA-REI.B.4B

These are ways to solve quadratic equation except.

• Solving Quadratic Equation by Factoring

• Solving Quadratic Equation by Completing the Square

• Solving Quadratic Equation by Using the Quadratic Formula

• Solving Quadratic Equation by Multiplication

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CCSS.HSA-REI.B.4B

An equation where the highest exponent of the variable (usually "x") is a square (²).

• Linear Expression

• Quadratic Expression

• Linear Equation

• Quadratic Equation

What is this formula?

• This is the speed of light formula.

• This is the quadratic formula.

• This is the zero product property.

• This is scary.

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CCSS.HSA-REI.B.4B

Determine the values of
a, b, and c for
the quadratic equation: 
4x² – 8x = 3
*remember right side should =0

• a = 4, b = -8, c = 3

• a = 4, b =-8, c =-3

• a = 4, b = 8, c = 3

• a = 4, b = 8, c = -3

Use the quadratic formula to solve: n² = 9n - 20

• n = 4 and n = -5

• n = -4 and n = 5

• n = -4 and n = -5

• n = 4 and n = 5

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CCSS.HSA-REI.B.4B

Solve by factoring: x² - 9x + 20 = 0

• x = -4 and x = -5

• x = 20 and x = -9

• x = 4 and x = 5

• x = -4 and x = 5

Tags

CCSS.HSA-REI.B.4B

Solve for x. Round to the nearest hundredth if necessary.

2x² = -x + 3

• x = -1 and x = 1.5

• x = 1.5 and x = -1

• x = 1 and x = 1.5

• x = -1.5 and x = 1

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CCSS.HSA-REI.B.4B