What is the value of the expression iºxi1 x 2 x 3 xi4?

a) 1
b) -1
c) i
d) -i

Option b.

Step-by-step explanation:

Note: The given expression is not in correct form. Consider the given expression is .

Let as consider the given expression is  

We know that,

Using these values, we get

The value of given expression is -1.

Therefore, the correct option is b.

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.