Question

factorize k2-2k-399
​

Answer 1

Answer:

Use the sum-product pattern

2

−

2

−

3

9

9

k^{2}{\color{#c92786}{-2k}}-399

k2−2k−399

2

+

1

9

−

2

1

−

3

9

9

Step-by-step explanation:

Solution

(

−

2

1

)

(

+

1

9

)