Answer:
are those 3 different question of just one?
Step-by-step explanation:
Answer:
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Step-by-step explanation:o o o f
Answer:
x=-2
Step-by-step explanation:
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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