For what the value of x, the following expressions become undefined? : 1)x²-y/x-y
2)x³/x²-4
3)5x³/4-x
4)3x²-2xy/x²-16
5)x²-5x+6/x²-49

Please explain nicely^_^

Not sure about 1 and 4, since there's also a y variable, but:

2) x=2

3) x=4

5) x=7

When we plug these values into the given equation, we get undefined values, such as something divided by 0.

if we use 2 as an example, we have (x³/x²-4)

If we replace 2, we get (2³/2²-4)

Which simplifies to 8/4-4

=8/0

nada

step-by-step explanation:

region b will make the inequalities y < 2x + 1 and y > -x - 2 true ⇒ answer a

step-by-step explanation:

* lets study the graph and the inequality to solve the question

- the inequality y > -x - 2

∵ the form of the inequality is y > mx + c , m is the slope of the line

  and c is the y-intercept (the line intersect y-axis at point (0 , c)

∴ c = -2 that means the line intersect the y-axis at point (0 , -2)

∵ the sign of the inequality is >

∴ we shad the part over the line

  region a and b

- the inequality y < 2x + 1

∵ the form of the inequality is y > mx + c , m is the slope of the line

  and c is the y-intercept (the line intersect y-axis at point (0 , c)

∴ c = 1 that means the line intersect the y-axis at point (0 , 1)

∵ the sign of the inequality is <

∴ we shad the part under the line

  region b and c

∵ the common region between the two lines is region b

∴ region b will make the inequalities y < 2x + 1 and y > -x - 2 true