Question

apply identities (x-2y-3z)^2​

Answer 1

Step-by-step explanation:

(a-b-c)2 = a2+b2+c2+2ab+2bc+2ca

Answer 2

Answer:

x²+4y²+9z²+12yz-6zx

Step-by-step explanation:

x²+(-2y)²+(-3z)²+2(x)(-2y)+2(-2y)(-3z)+2(-3z)(x)

x²+4y²+9z² -4xy +12yz-6zx

Identity

(A+B+C)²=A²+B²+C²+2ab+2bc+2ca