Hi ,basically i have Lenovo ideaa tab but somewhat i lost the original charger And i was charging with cellphone charger ,but now it is giving me problem and i want to buy new orginal charger but it give me option to choose 2A 2A-l type 4A dual i ant to know what that means and which one should i choose? I will be thankful for help.
In terms of size and comparability yes. However, I think there is a very minor charging difference in terms if power output. [Added by DH - I think you'll find the only difference is that the mains adapter for iPad has 2A output vs. 1A for iPhone/Pod. You should be able to use the iPad charger with iPhone (will only draw the required current). And you should be able to use an iPhone charger with iPad (but it will take longer to charge).] The charger port are not same in size. But some universal iPhone charger (not original made by Apple) can support both of them.
12V DC & 2A output
Since the question is 3(2a), then just write it out. 3(2a) is 2a+2a+2a or 6a.
The multiplicative inverse of -2a is 1/(-2a) = -1/2a
2a+2a-7b+7b =4a
a-^2a-b^-a-b
The answer is 4a^2.
a + a + a - 2a = 3a - 2a = a
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 --------------------
8b36
3a-2a = 1
9a +8 -2a -3 -5a = 2a +5