Question

please expand (3x-4y-2)²​

Answer 1

$(3x - 4y - 2) {}^{2}$

$9x {}^{2} + 16y {}^{2} + 4 - 2(3x)( - 4y) + 2( - 4y)( - 2) - 2(3x)( - 4y)$

$9x {}^{2} + 16y {}^{2} + 4 + 24xy + 16y + 24xy$

$9x {}^{2} + 16y {}^{2} + 48xy + 16y + 4 = 0$