Solving Quadratics with Quadratic Formula and Square Root Method

Which method do you feel is the best way to solve the following?

• Factor

• Isolation/Solve with Square Roots

• Complete the Square

• Quadratic Formula

Mathematical Equivalence

ON

Solve Using the Quadratic Formula
 x² + 4x - 40 = -8

• -10 & -4

• -4 & 10

• -8 & 4

• 8 & -4

Solve by the Square Root method:

-5x² = -50

• ± 5

• ± 10

• ± √10

• -10

Solve the equation: 
5x² - 35x + 60 = 0

• x = 3,  -4

• x = -3,  4

• x = 3,  4

• x = -3,  -4

How many solutions are there?

• 0

• 1

• 2

• 3

Solve the following quadratics equation by completing the square...

x² + 4x + 1 = 0

• x = -2 ± √3

• x = -3 ± √2

• x = 2 ± √3

• x = 2 ± √2

When using the Quadratic Formula method, what are a, b, and c for the equation: 9x²-x= 0?

• a=9, b = -1, c =0

• a=1, b = 0, c =0

• a=9, b = 0, c =0

• a=9, b = 1, c =0

When will a quadratic equation have no 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