Question

Do yoU GUYS NO WHICH ONES ARE POLYNOMIALS?

Answer 1

Do you know what the definition of a polynomial is?

Answer 2

Basically you can have five things in polynomials:
- addition
- subtraction
- multiplication
- division
- exponents that are *positive* and *whole* (so no fractions)

Answer 3

ok

Answer 4

An expression made with constants, variables and exponents, which are combined using addition, subtraction and multiplication, ... but not division.

The exponents can only be 0,1,2,3,... etc.
And it can't have an infinite number of terms.

Answer 5

The five you posted are:

\[
1\cdot x^2 - 3x^{\frac{69}{2}}\\
1\cdot x^2 - 3x^{69} - \sqrt{x}\\
(-1)\cdot x^2 - 3x^{68} - \sqrt{2.4}x\\
1\cdot x^2 - 3x^{-96}\\
(-1)\cdot x^2 - \frac{3}{2}x^{69} - \sqrt{2.4}
\]

Answer 6

Do you see anything right off the bat that doesn't fit the operations I mentioned above?

Answer 7

UHM the ( )

Answer 8

c and e

Answer 9

No, () is just used for grouping, it's not really an “operation”.

Answer 10

Remember I said no fractions in exponents. Are there any of the options that have fractions in their exponents?

Answer 11

oh yea!

Answer 12

e

Answer 13

Technically you're right, but remember that the \(\frac{3}{2}\) in e is not an exponent. It's multiplied in, so it's safe.

Answer 14

But a has a \(\frac{69}{2}\) in an exponent, right?

Answer 15

YEp

Answer 16

So that one's bad. Are there any other operations that you see in that list that weren't in my list?

Answer 17

no

Answer 18

?

Answer 19

Not quite true. Is square root on my list?

Answer 20

OOO! no.

Answer 21

SO THEN THE ANSWER IS D!

Answer 22

Right! :)

Answer 23

thanks <3