kaylala
  • kaylala
Are the following algebraic expressions a POLYNOMIAL OR NOT? 1. (square root of ) x^3 y^2 z 2. 12ab^2 -------- 5ab 3. -3 ------- xy 4. 9(cube root of z) 5. ((square root of 3) x^2 y^3) / 4xy^2
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
they r not, in the polinomila the exponents must be integers
bahrom7893
  • bahrom7893
^ positive integers
bahrom7893
  • bahrom7893
and the answer's wrong. I can see at least one expression, which, when simplified, becomes a polynomial.

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More answers

kaylala
  • kaylala
@bahrom7893 what expression can be a polynomial?
bahrom7893
  • bahrom7893
Simplify each of them and post what you get.
anonymous
  • anonymous
@kaylala : polynomial is something which has power of an integer, not a fraction Say x^2 is a polynomial , not x^2/3 I hope you got this one.
kaylala
  • kaylala
@bahrom7893 1. cant be simplified 2. 12b^2 --------- 5 3. still the same 4. same 5. (square root of 3) xy ------------------ 4 ??????
bahrom7893
  • bahrom7893
well technically x^2/3 is a polynomial, x^(2/3) is not.
bahrom7893
  • bahrom7893
So once you have simplified it, which one ends up with positive integer exponents?
kaylala
  • kaylala
@bahrom7893 where did you get x^2/3?
bahrom7893
  • bahrom7893
nvm that, it was from an example that thinker was talking about. From your own simplified post. Which of those expressions have positive integer exponents?
kaylala
  • kaylala
so, what's the answer per number item?
bahrom7893
  • bahrom7893
I'm not going to give you the answer. You are 90% there. Can you just answer which of the expressions, when simplified end up with positive integer exponents? <- that expression will be your answer.
kaylala
  • kaylala
number 2?
bahrom7893
  • bahrom7893
yes
kaylala
  • kaylala
but # 2 has a denominator??
bahrom7893
  • bahrom7893
but not in the exponent
kaylala
  • kaylala
doesnt # 2 have a variable in the denominator? @bahrom7893
bahrom7893
  • bahrom7893
2. 12b^2 -------- where do you see a variable in the denominator? 5
kaylala
  • kaylala
ohhh..ok so the variable hence is a letter. is # 2 the only polynomial out of all? @bahrom7893
bahrom7893
  • bahrom7893
yes. basically polynomials follow a form a*x^(n) where a can be any number, n has to be a positive integer.
kaylala
  • kaylala
ok. thanks @bahrom7893

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