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Which algebraic expressions are polynomials? Check all that apply. Pi x minus StartRoot 3 EndRoot 5 y x2y 2 – 4x3 12y StartFraction 4 Over x EndFraction – x2 – 16 3. 9x3 – 4. 1x2 7. 3.

Sagot :

By using definition of polynomial we got that out of

[tex]$\pi x-\sqrt{3}+5y$[/tex] , [tex]$x^{2} y^{2}-4 x^{3}+12 y$[/tex], [tex]\frac{4}{x} -x^{2}[/tex]  , [tex]$\sqrt{x}-16$[/tex] and [tex]$3.9 x^{3} +1 x^{2}+7.3[/tex]

only [tex]$3.9 x^{3} +1 x^{2}+7.3[/tex] is an polynomial .

what is polynomial?

A polynomial is an expression, which involves only the operations of addition, subtraction, multiplication and exponentiation of non-negative integers of unknown variable .

(i)

[tex]$\pi x-\sqrt{3}+5y$[/tex]

This consist of 2 variable so this is not a polynomial

(ii)

[tex]$x^{2} y^{2}-4 x^{3}+12 y$[/tex]

This consist of 2 variable so this is not a polynomial

(iii)

[tex]\frac{4}{x} -x^{2}[/tex]

Here variable  x is in denominator in term  4/x so  this is not a polynomial

(iv)

[tex]$\sqrt{x}-16$[/tex]

Here power of variable x is not an integer so it's not a polynomial

(v)

[tex]$3.9 x^{3} +1 x^{2}+7.3[/tex]

This satisfy all condition of being a polynomial hence this is a polynomial.

By using definition of polynomial we got that out of

[tex]$\pi x-\sqrt{3}+5y$[/tex] , [tex]$x^{2} y^{2}-4 x^{3}+12 y$[/tex], [tex]\frac{4}{x} -x^{2}[/tex]  , [tex]$\sqrt{x}-16$[/tex] and [tex]$3.9 x^{3} +1 x^{2}+7.3[/tex]

only [tex]$3.9 x^{3} +1 x^{2}+7.3[/tex] is an polynomial .

To learn more about polynomial visit : https://brainly.com/question/2833285