Solving Quadratics Using Any Method

Using the Square Root method, what is the first step to solving the equation: 8x²+9=10

• Subtract 10 from both sides

• Divide by 8

• Subtract 9 from both sides

• Take the square root of both sides.

Tags

CCSS.HSA-REI.B.4B

Which method will work well for ANY quadratic equation?

• Factoring

• Square Root

• Completing the Sqare

• Quadratic Formula

Tags

CCSS.HSA-REI.B.4B

What should you do first in solving this equation?
x² + 6x - 13 = 3

• Get factored form

• Write down: a=1, b=6, c=-13

• Make it equal 0 by subtracting 3 on each side

• Type it all in a calculator.

Tags

CCSS.HSA-REI.B.4B

Solve:

0 = -x² - 5x + 12

• No Real Solution

• 
• 
• 

Tags

CCSS.HSA-REI.B.4B

When will a quadratic equation have no real solution?

• When it does not equal 0.

• When there is a negative in the square root.

• When there is a bx term.

• When there is no product/sum numbers.

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

What is this?

• This is the speed of light formula.

• This is the quadratic formula.

• This is the zero product property.

• This is scary.

Tags

CCSS.HSA-REI.B.4B

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

• 16

• -8

• 24

• -24

You jump off a 24 foot high cliff and your fall is modeled by the function:

h(t) = -16t² + 8t + 24

How long would it take you to hit the water?

• 8 seconds

• 1 second

• 1.5 seconds

• 1/4 second

Heather dropped a water balloon over the side of her school building from a height of 80 feet. The approximate height of the balloon at any point during its fall can be represented by the following quadratic equation: h = -16t² + 80 About how long did it take for the balloon to hit the ground?

• 1.73 seconds

• 2.24 seconds

• 2.45 seconds

• 2.83 seconds