Question

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

Answer 1

Step-by-step explanation:

$\tt{(5 {x}^{3} - 3x + 6) - (2 {x}^{2} - 4x + 8)}$

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

⟶ $\tt{5 {x}^{3} - 3x + 6 - 2 {x}^{2} + 4x - 8}$

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

⟶ $\tt{5 {x}^{3} - 3x + 4x + 6 - 8 - 2 {x}}^{2}$

⟶ $\tt{5 {x}^{3} + x - 2 - 2 {x}^{2} }$

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

$\red{ \boxed{ \boxed{ \tt{Our \: final \: answer : \boxed{ \tt{5 {x}^{3} - 2 {x}^{2} + x - 2}}}}}}$

Hope I helped ! ♡

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Answer 2

Answer:

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.