Question

Can someone show me to to find the Domain of Rational expressions on this problem Please?
5m^2+m/7m

Answer 1

Any ideas?

Answer 2

$$\Huge \frac{5m^2+m}{7m}$$

Answer 3

5m^2+m/7m
m(5m+1)/7m The first thing we have to do is factor the numerator and the denominator. cancel off any common factors.
5m+1/7

Answer 4

Is that all there is to this problem or am I missing the final step?

Answer 5

You are missing the whole point of the question.

Answer 6

to find the Domain of Rational expressions

Answer 7

Can you explain this to me?

Answer 8

Sure, the first and most important thing to understand is "division by 0 is undefined."

Answer 9

Do you know why you can never divide by 0?

Answer 10

because the answer would be zero

Answer 11

If the answer was 0 then it would be OK since 0 is a perfectly valid answer.

Answer 12

-2 + 2 = 0

0*4 = 0

Answer 13

$$ 0\div 6=0$$

Answer 14

Okay this makes since because the zero is the answer to that problem

Answer 15

Similarly we can have negative numbers as the answers to questions like

-6 + 2 = -4

-5*3 = -10

$$-6\div2=-3$$

Answer 16

Okay if the answer refers to the problem and it ends up being negative.

Answer 17

So with division by 0 the answer is undefined.

Because division by 0 is undefined.

Answer 18

okay

Answer 19

Now look at your question and find out which value of the variable will make it undefined.

Answer 20

5m^2+m/7m

m

Answer 21

which value of the variable will make it undefined.

Answer 22

I think the "m" that is being added the the 5m^2.
I also think the "m" of the 7