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3 years ago

Answer these 4 questions for brainliest! :)

Mathematics

1 answer:

Verdich [7]3 years ago

4 0

Answer: 1. X+2

2. 6x-3

3. -2x-1

4. 9x5

Step-by-step explanation:

1. X+4-3+1 There is only one variable, so you don’t need to worry about that. Just do all of the numerical operations. 4-3+1= 2. So it would be x+2

2. X-5+5x+2. Again, do the numerical operations first. -5+2=-3. X+5x=6x. So it would be 6x-3.

3. 2x+7-4x-8. 7-8=-1. 2x-4x=-2x. So it would be -2x-1.

4. (4+3)x+2x-5. Do the operation in the parenthesis first. Then it would be (7)x or just 7x+2x-5. Simplify to 9x-5.

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Step-by-step explanation:

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3 years ago

For which value(s) of x will the rational expression below be undefined?

zvonat [6]

Question:

For which value(s) of x will the rational expression below be undefined? Check all that apply.

(x-3)(x+6)/x+7

Answer:

For x = -7 the rational expression is undefined

Solution:

Given rational expression is:

$\dfrac{(x-3)(x+6)}{(x+7)}$

We have to find the value of x for which the rational expression becomes undefined

A rational expression is undefined when the denominator is equal to zero

Here, the denominator becomes zero when x = -7

Substitute x = -7 in given

$\dfrac{(-7-3)(-7+6)}{(-7+7)} = \frac{-10 \times -1}{0} = \frac{10}{0}$

Thus for x = -7 the rational expression is undefined

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4 years ago

Read 2 more answers

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olga55 [171]

Answer:

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Step-by-step explanation:

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d can be equal to 4 + 2(67)

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4 years ago