Question

(-3x +2y -4z)² expand using the identity (x+y+z)² = x² + y² + z² + 2xy + 2yz + 2zx​

Answer 1

Answer:

(-3x+2y-4z)2= -9x+4y+(-16z)+2×(-3)×2+2×2×(-4)+2×(-4z)×(-3x)

(-9x)+4y+(-16z)+(-12)+(-16)+24zx