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(x² +1)(x² + 3) = x⁴ + 4x² + 3

The two polynomials are not monomial are [tex]\rm x^2[/tex] and [tex]\rm x^2+2x+1[/tex].

We have to determine, two polynomials that are not monomials whose product is a trinomial of degree 4.

According to the question,

A monomial is a special kind of polynomial, which is an algebraic expression having only one single term which is non-zero.

The two polynomials are not monomial are [tex]\rm x^2[/tex] and [tex]\rm x^2+2x+1[/tex].

Then,

The product of these two polynomial is,

[tex]\rm= x^2 \times (x^2+2x+1)\\\\= x^4+2x^3+x^2[/tex]

The product of the polynomial trinomial and degree is 4.

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