Transfer error at line 3
Transfer error. 12a^2 become 2a^2. I make this kind of mistakes too.
(2a+1)^2 is not (4a^2+1)
(2a + 1)^2 IS NOT equal to (4a^2+1) !!!!(2a + 1)^2 is (2a + 1)(2a + 1) = 2a(2a+1) + 1(2a + 1) = 4a^2 + 2a + 2a + 1 = 4a^2 + 4a + 1
The person did not use the foil or prove to expand (2a+1)^2 so the answer derived is wrong.The person transferred 12a^2 wrongly at the third line.
He/she transferred wrongly, from 12a^2 into 2a^2.
Mistake of the week.12a, he changed to 2a. Owen here.
-2a instead of 12a and btw, i think it might be me -.-
(2a+1)^2 ≠ (4a^2+1) Transfer error , should be 12a not 2a .
He/she changed 12a into 2a. .________________>...And (2a+1)^2≠(4a^2+1). ._____.its 4a^2+4a+1.The name's Ishani.
(2a + 1) ^2 ≠ (4a^2 +1)It is (2a + 1) (2a +1) = 4a^2 + 4a + 1
12a^2 become 2a^2
There was a transfer error