Question

expand : (-3x + y - 2z)^2 plz answer this question ​

Answer 1

Step-by-step explanation:

using identity( a+b+c)²= a²+b²+c²+2ab+2bc+2ac

(-3x)²+ y²(-2z)²+{2(-3x)(y)} + {2(y)(-2z)} + {2(-3x)(-2z)}

9x²+y²+4z²-6xy -4yz + 12xz

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