Question

Math help!! Last few questions.

Answer 1

real easy

Answer 2

Take the expressions and input them into \(\sf \dfrac{f}{g}\).

Answer 3

What's the expression for \(\sf f\)?

Answer 4

okay, x^2-16?

Answer 5

Correct, what about \(\sf g\)?

Answer 6

x+4?

Answer 7

Yes, so input them into the formula, \(\sf\dfrac{f}{g}\).

\(\sf\dfrac{x^2-16}{x+4}\)

Can you factor the numerator?

Answer 8

I am not sure.

Answer 9

You don't know how to factor \(\sf x^2 - 16\)?

Answer 10

No.

Answer 11

That would be \(\sf (x + 4)(x - 4)\)..so we replace \(\sf x^2-16\) with this.

Answer 12

You should brush up on factoring..this is one of the most simple one's to factor.

Answer 13

Okay

Answer 14

\(\sf \dfrac{(x + 4)(x - 4)}{x + 4}\)

Can you simplify that?

Answer 15

X-4

Answer 16

So my choices are, x-4; all real numbers except x =4. x-4; all real numbers except x=-4

Answer 17

That is correct.

Answer 18

x = -4 will give us a 0 in the denominator, and we cannot divide by 0.

Answer 19

Which one is it between those choices. that's my two choices.

Answer 20

I just told you.

x = -4 will give us a 0 in the denominator, and we cannot divide by 0.

So which one should it be?

Answer 21

the second one?

Answer 22

Yes, that's correct.

Answer 23

Thank you

Answer 24

Can you help with this one