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3a+a^{2}+2a^{2}-5-a-2a^{2}+10+a
To find the opposite of -2a^{2}+5+a, find the opposite of each term.
3a+3a^{2}-5-a-2a^{2}+10+a
Combine a^{2} and 2a^{2} to get 3a^{2}.
2a+3a^{2}-5-2a^{2}+10+a
Combine 3a and -a to get 2a.
2a+a^{2}-5+10+a
Combine 3a^{2} and -2a^{2} to get a^{2}.
2a+a^{2}+5+a
Add -5 and 10 to get 5.
3a+a^{2}+5
Combine 2a and a to get 3a.
3a+a^{2}+2a^{2}-5-a-2a^{2}+10+a
To find the opposite of -2a^{2}+5+a, find the opposite of each term.
3a+3a^{2}-5-a-2a^{2}+10+a
Combine a^{2} and 2a^{2} to get 3a^{2}.
2a+3a^{2}-5-2a^{2}+10+a
Combine 3a and -a to get 2a.
2a+a^{2}-5+10+a
Combine 3a^{2} and -2a^{2} to get a^{2}.
2a+a^{2}+5+a
Add -5 and 10 to get 5.
3a+a^{2}+5
Combine 2a and a to get 3a.