Evaluate: -7a²+9a².
Answers
Answered by
1
Answer:
a^2(-7+9)
a^2(2)
2a^2
Answered by
0
Answer:
The answer is 2a²
Step-by-step explanation:
-7a²+9a²
=a²(-7+9)
=a² x 2
=2a²
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