Only the smartest person in their math class can help me with this difficult problem!!!

Step-by-step explanation:

While subtracting , the sign of each term of second expression changes & remove the parentheses.

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Combine like terms. Like terms are those which have the same base. Only coefficients of like terms can be added or subtracted.

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In standard from , the expression should be written in such a way that the power of variables goes from highest to lowest.

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I'm the smartest person in my math class.

Step-by-step explanation:

While subtracting , the sign of each term of second expression changes & remove the parentheses.

⟶ 5x³-3x +6-2x²+4x-8

Combine like terms. Like terms are those which have the same base. Only coefficients of like terms can be added or subtracted.

⟶   5x³-3x+4x+6-8-2x²

⟶  5x³+x-2-2x²

In standard from , the expression should be written in such a way that the power of variables goes from highest to lowest.

a variable is any characteristics, number, or quantity that can be measured or counted. a variable may also be called a data item. hope i !