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Q: What is 2a a?

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2a2

Since the question is 3(2a), then just write it out. 3(2a) is 2a+2a+2a or 6a.

2a - a = a

a-^2a-b^-a-b

since a=1a, 3a-1a=2a

The multiplicative inverse of -2a is 1/(-2a) = -1/2a

2a+2a-7b+7b =4a

a + a + a - 2a = 3a - 2a = a

2a + 3b

The answer is 4a^2.

assuming 5a-a-2a-18=0 2a-18=0 2a=18 and thus a=9

2a-3+4b-2a-b-2a-b-3+5 Can be simplified to: 3b-1

5a- 2a = 3

3a-2a = 1

2a-3ab = -1

2a-4b = -2

2a - 5a = -3a

2a + 3a = 5a

cos2A = cos^2A-sin^2A (2A means the double angle .. :|)

2a+5b isn't possible the answer is still 2a+5b.

2a + 2b = c subtract 2a from both sides 2a - 2a + 2b = c - 2a 2b = c - 2a divide both sides by 2 (2/2)b = (c - 2a)/2 b = (c - 2a)/2 --------------------

(2a + 5)(2a - 5)

1/(2a)

4a

2a+(-11b)