4. Write 2 trinomials that when you add them together you will get 5x2 + 9x + 3.
Trinomial A
Trinomial B

An expression is defined as a set of numbers, variables, and mathematical operations. The two trinomial whose sum will get 5x²+9x+3 are 3x²+5x+2 and 2x² + 4x + 1.
In mathematics, an expression is defined as a set of numbers, variables, and mathematical operations formed according to rules dependent on the context.
The two trinomial whose sum will get 5x²+9x+3, therefore, the trinomial will be,
Trinomial A = 3x²+5x+2
Trinomial B = 2x² + 4x + 1
Hence, The two trinomial whose sum will get 5x²+9x+3 are 3x²+5x+2 and 2x² + 4x + 1.
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