Solving Quadratics Using Any Method

Solve:

x² + 2x - 8 = 0

• 4 and 2

• 4 and -2

• -4 and 2

• -4 and -2

Solve:

z² - 6z - 27 = 0

• z = 3 or z = 9

• z = 3 or z = -9

• z = -3 or z = 9

• z = -3 or z = -9

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.

Which of the following cannot be solved with the Square Root method?

• x²-9=0

• x²-15=0

• x²-9x=0

• 6x²-15=0

What is the first step to solving x²-9x=10 with Factoring?

• Look for 2 numbers whose sum is -9 and product is 10.

• Subtract 10 from both sides.

• Divide -9 by 2 and square the answer.

• Look for 2 numbers whose sum is 10 and product is -9.

When using the Quadratic Formula method, what are a, b, and c for the equation: 9x²-x+7=2?

• a=9, b = -1, c =7

• a=1, b = 0, c =7

• a=9, b = -1, c =5

• a=9, b = 7, c =2

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.

Which method will work well for ANY quadratic equation?

• Factoring

• Square Root

• Completing the Sqare

• Quadratic Formula

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.

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.