hint: (A+B)^2 = A^2 + 2AB + B^2 (A-B)^2 = A^2 - 2AB + B^2
(4x-2)^2 = ?
it's A and C that match.. when applying the formula vocaloid hinted at.
there are 2
But the test says only one
it says choose ALL that are correct
oh my God, I attached the wrong one sorry
(4x-2)^2 = ..... and (3y+4z)^2 = ... are correct. you can check for yourself 4x^2 - 2(4x)(2) + (2)^2