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Anonymous
3a^2 + 3a^2 = 6a^2
3a^2 - 3a^2 = 0
3a^2 x 3a^2 = 9a^4
3a^2 divided by 3a^2 = 1
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The given expression can be simplified to: 3b-a
81(a^4)
the 3 in 3a is called a coefficient.
3a + 5b - 6a - 9b = -3a - 4b
3a + 2a = 5a