Answer :
Answer:
Well, I am not sure which one is equivalent to another, but I have some information that should help you find your answer.
Step-by-step explanation:
The simplified expression to x2 − x − 6 x2 + 2x − 15 would be equal to −5 x 2 + x − 15.
The simplified expression to x + 3 x + 5 would be equal to 4x + 5.
The simplified expression to x + 2x + 5 would be equal to 3x + 5.
The simplified expression x + 3 x − 3 would be equal to 4x − 3.
The last simplified expression to x + 2 x − 3 would be equal to 3x − 3.
Hope this helps, I am really sorry if I didn't answer your question properly, or the way you asked!
The equivalent expression is [tex]-5x^{2} +x-15[/tex]
Summation of Polynomials:
To find the sum of polynomials we have to add like terms.
Like terms are those terms which have same variable with same exponent power.
Given expression are,
[tex]x^{2} -x-6x^{2} +2x-15\\\\=x^{2} -6x^{2} -x+2x-15\\\\=-5x^{2} +x-15[/tex]
Learn more about the algebraic expression here:
https://brainly.com/question/4344214