Factor Quadratics (10 Point)
x² + 3x – 18
(x - 3) (x + 6)
(x - 2) (x + 7)
(x - 2) (x + 3)
(x - 5) (x + 7)

Let's factor x2+3x−18

x2+3x−18

The middle number is 3 and the last number is -18.

Factoring means we want something like

(x+_)(x+_)

Which numbers go in the blanks?

We need two numbers that...

Add together to get 3

Multiply together to get -18

Can you think of the two numbers?

Try -3 and 6:

-3+6 = 3

-3*6 = -18

Fill in the blanks in

(x+_)(x+_)

with -3 and 6 to get...

(x-3)(x+6)

(x−3)(x+6)

Step-by-step explanation:

452,489 to the nearest thousand is 452,000