Review of Quadratics (Welcome back from Spring Break)

What was one thing you enjoyed over the break?

Find two numbers that multiply to the value on top and add to the value on bottom.

• 6

• 3

• 2

• 9

Answer explanation

Find two numbers that multiply to the value on top and add to the value on bottom.

• 1

• 9

• 3

• 6

Answer explanation

Find two numbers that multiply to the value on top and add to the value on bottom.

• -10

• 5

• 10

• -5

Answer explanation

Factor
a² - a - 12

• (a - 4)(a + 3)
• (a + 6)(a - 4)
• (a - 6)(a + 4)
• (a + 4)(a - 3)

Factor:
x² + 7x - 30

• (x + 10)(x - 7)
• (x - 10)(x + 3)
• (x + 10)(x + 3)
• (x + 10)(x - 3)

What are the
x-intercepts of the function
f(x)= (x - 2)(x + 3)?

• x = - 2 or x = 3
• x = 2 or x = -3
• The are no real roots
• x = 2 or x = 3

Write a quadratic equation given the x intercepts and one other point.

Step 1: Write the factors.

The intercepts of this function are (6, 0) and (8, 0). Write the factors.

• (x-6) and (x-8)

• (x+6) and (x+8)

• (x-6) and (x+8)

• (x+6) and (x-8)

Identify the y-intercept

• (-1,9)
• (0,-8)
• (-4,0)
• (0,0)