3 years ago

Use FOIL to derive the identify for (a+b)^2.

Mathematics

1 answer:

Firlakuza [10]3 years ago

3 0

Answer:

a^2+2ab+b^2

Step-by-step explanation:

FOIL method is First variables Outer variables Inner variables Last variables

(a+b)^2 rewritten is (a+b)(a+b)

F - a*a

O - a*b

I - a*b

L - b*b

a*a+a*b+a*b+b*b

simplify

a^2+2ab+b^2

You might be interested in

How do you use a table or diagram to represent the relationship between to quantities. For the question, For each lion, there ar

Artist 52 [7]

For a table or diagram you would write 1 lion and then write 7 giraffes for each lion I hope this helps!!!!!!!

6 0

4 years ago

What is the mode of the following numbers? 6,4,1,9,3,8,3,5,10

siniylev [52]

Answer:

Step-by-step explanation:

Mode is the number that appears most often in a set, so for this one the mode would be 3 since it appears the most often

7 0

3 years ago

In Ellen's math class, there are 2 boys for every 3 girls. If there are 21 girls in the class, how many boys are in the class?

Makovka662 [10]

Answer: 14 boys

Step-by-step explanation:

ratio 2:3

7 divided by 21 = 3, so 7 times 2 equals 14

3 0

3 years ago

Read 2 more answers

A pigeon was sitting 18 feet from the base of a telephone pole and flew 30 feet to reach the top of the pole. How tall is the te

natta225 [31]

Answer:

The telephone pole is 24 ft.

Step-by-step explanation:

30^2-18^2=b^2

900-324=b^2

576=b^2

\sqrt{576} =\sqrt{b^2}

24=b

b=height of telephone pole

6 0

3 years ago

What is the value of x? <br> sin64°=cosx

AnnZ [28]

We can solve for the value of x by applying the principles of sine and cosines method and laws of the inversed sign.
Given:
sin64°=cosx
Perform sin64° which is equal to 0.8987940463
0.8987940473=cosx
perform inverse sign:
cos-0.8987940473=x
x=26°
Therefore, the value of x is 26°.

5 0

4 years ago

Use FOIL to derive the identify for (a+b)^2.​

Use FOIL to derive the identify for (a+b)^2.