3 years ago

HELP ASAP Which pair shows equivalent expressions?

1 answer:

6 0

Answer:

Tha awnser is B.

Step-by-step explanation:

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Tanzania [10]

I think it is b just bcuz of what the question is

4 0

3 years ago

Lera25 [3.4K]

Answer:

tex]a^2 - 4b \neq 2[/tex]

Step-by-step explanation:

We are given that a and b are integers, then we need to show that $a^2 - 4b \neq 2$

Let $a^2 - 4b = 2$

If a is an even integer, then it can be written as $a = 2c$ , then,

$a^2 - 4b = 2\\(2c)^2 - 4b =2\\4(c^2 -b) = 2\\(c^2 -b) =\frac{1}{2}$

RHS is a fraction but LHS can never be a fraction, thus it is impossible.

If a is an odd integer, then it can be written as $a = 2c+1$ , then,

$a^2 - 4b = 2\\(2c+1)^2 - 4b =2\\4(c^2+c-b) = 2\\(c^2+c-b) =\frac{1}{4}$

RHS is a fraction but LHS can never be a fraction, thus it is impossible.

Thus, our assumption was wrong and $a^2 - 4b \neq 2$ .

7 0

2 years ago

natali 33 [55]

It’s A (-4,4) just plug the number and that your answer

8 0

2 years ago

In-s [12.5K]

I’m pretty sure c is the right answer

4 0

3 years ago

Rus_ich [418]

3.8 if u use long division u will get 3.8 hope that helps. Good luck too

5 0

3 years ago