Assist with this problem. it is really difficult.

a) is an identity.

Step-by-step explanation:

Most of the left hand sides are in this form:

.

When you multiply conjugates you do not have to use full foil.  You can just multiply the first and multiply the last or just use this as a formula:

.

Choice a), b), and d). all have the form I mentioned.

So let's look at those choices for now.

a)

 (I used my formula I mentioned above.)

So this is an identity.

b)  

(by use of my formula above)

This is not the right hand side so this equation in b is not an identity.

d)

This is not the same thing as the right hand side so this equation in d is not an identity.

Let's look at c now.

c)

There is a formula for expanding this so that you could avoid foil. It is

.

Just for fun I'm going to use foil though:

First: x^3(x^3)=x^6

Outer: x^3(y^2)=x^3y^2

Inner: y^2(x^3)=x^3y^2

Last: y^2(y^2)=y^4

---------------------------Add.

This is not the same thing as the right hand side.

6hryt%4578855

option 2 is correct.

step-by-step explanation:

we are given two inequality equation

x+y> 5 and -3x+2y< -2

first we draw the graph of both function using t-table method

equation: x+y> 5

for x=0, y=5

for x=-5, y=0

table:

x   :   0     5

y   :   5     0

test point (0,0) , 0> 5

false

equation: -3x+2y< -2

for x=0, y=-1

for x=2, y=4

table:

x   :   0     2

y   : -1       4

test point (0,0) , 0< -2

true

now we draw the graph. see the attachment for graph.

common region would be solution set.

option 2 is correct.