Solving Quadratics All Methods Algebra

Solve
x² + 2x - 24 = 0

• x = -6, x = 4
• x = 6, x = -4
• x = 12, x = -2
• x = 8, x = -3

Which of the following equations matches standard form of a quadratic?

• (x + a)(x + b) = c

• y = a(x - h)² + k

• y = ax² + bx + c

• y = mx + b

What is another word for roots?

• y-intercepts

• x-intercepts

• vertex

• axis of symmetry

What is the first step to solving THIS equation by completing the square?

a² + 10a + 21 = 0

• Set the equation equal to zero

• Divide 10 by 2 and add the result to both sides

• Multiply a² and 21 together

• Subtract the 21

Decide on the best method:

3a² + 13a = -4

• Square Root Method

• Factor Method

• Complete the Square

• Quadratic Formula

Decide on the best method:
x² - 3x - 54 = 0

• Square Root Method
• Factor Method
• Complete the Square
• Quadratic Formula

Decide on the best method:

x² + 2x + 9 = 0

• Square Root Method

• Factor Method

• Complete the Square

• Quadratic Formula

Decide on the best method:
2x² - 7x + 2 = 0

• Square Root Method
• Factor Method
• Complete the Square
• Quadratic Formula

Decide on the best method:

x² + 2x - 3 = 0

• Square Root Method

• Factor Method

• Quadratic Formula

• Completing the Square

Solve x^2 - 3x - 4 = 0 using the quadratic formula.

•  x = 4 and -1
• x = -4 and -1
• x = 4 and 1
• x = -4 and 1