Question

Expand the sum (3x-y-2z) ²

Answer 1

Answer:

$(3x-y-2z)^{2} =3^{2} x^{2} -y^{2} -2^{2} z^{2} +12xyz$ ⇒

∴

$9x^{2} -y-4z^{2} +12xyz$

Step-by-step explanation: