Question

Expand (4x-3y-2z)^2 using suitable identies

Answer 1

Step-by-step explanation:

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

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Answer 2

Answer:

16x²+9y²+4z²-24xy+12yz-16zx

Step-by-step explanation:

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

(4x-3y-2z)²=(4x)²+(-3y)²+(-2z)²+2(4x)(-3y)+2(-3y)(-2z)+2(4x)(-2z)

=16x²+9y²+4z²-24xy+12yz-16zx