How do you factor 4b^2+12b+9?

4b^(2)+12b+9

Step-by-step explanation:

Rewrite  

4

b

2

as  

(

2

b

)

2

.

(

2

b

)

2

+

12

b

+

9

Rewrite  

9

as  

3

2

.

(

2

b

)

2

+

12

b

+

3

2

Check the middle term by multiplying  

2

a

b

and compare this result with the middle term in the original expression.

2

a

b

=

2

⋅

(

2

b

)

⋅

3

Simplify.

2

a

b

=

12

b

Factor using the perfect square trinomial rule  

a

2

+

2

a

b

+

b

2

=

(

a

+

b

)

2

, where  

a

=

2

b

and  

b

=

3

.

(

2

b

+

3

)

2

your answer would be b

step-by-step explanation:

0.16 or 16%

step-by-step explanation:

lets take a coin for example.

if you toss it twice, it has a 1/4 chance of landing on heads both times because 1/2 * 1/2 is 1/4.

with the cards, the chance of picking dog is 0.4. having two people pick one is like picking a card twice in a row. so 0.4 * 0.4 is 0.16, or 16%