The Quadratic Formula

What is the quadratic formula used for?

• The quadratic formula is used to calculate the area of a circle.

• The quadratic formula is used to find the sum of two numbers.

• The quadratic formula is used to solve quadratic equations.

• The quadratic formula is used to determine the volume of a cube.

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CCSS.HSA-REI.B.4B

What is the standard form of a quadratic equation?

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CCSS.HSA.APR.A.1

What three methods of solving quadratics have we learned?

• Completing the Square

• The Quadratic Formula

• By Square roots

• Perfect Square Trinomials

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CCSS.HSA-REI.B.4B

Put the steps for using the Quadratic Formula in the correct order.

• Substitute a, b, and c into the formula.

• Identify a, b, and c.

• Solve the baby equations

• Simplify under the radical

• Make sure the equation is set equal to 0 and written in standard form.

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CCSS.HSA-REI.B.4B

Identify the 'a' value: y = 16x² -8x -24

• 16
• 8
• -8
• -24

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CCSS.HSA.REI.B.4

CCSS.HSA.APR.A.1

Identify the 'b' value: y = 16x² -8x -24

• 16
• -8
• 8
• -24

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CCSS.HSA.SSE.A.2

Identify the 'c' value: y = 16x² -8x -24

• 16
• -8
• 8
• -24

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CCSS.HSA.REI.B.4

• a = 2 , b = 3, c = -5

• a = 2, b = -3, c = 5

• a = 2, b = -3, c = -5

• a = -2, b = 3, c = 5

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CCSS.HSA.REI.B.4

• a = 3 , b = -2, c = 6

• a = -3, b = 2, c = 6

• a = -3, b = -2, c = -6

• a = 3, b = 2, c = -6

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CCSS.HSA.REI.B.4

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CCSS.HSA-REI.B.4B