Math, asked by AliceWhitewood, 4 months ago

Expand: (3x -y +z)^2​

Answers

Answered by meetk1
5

Answer:

(x+y+z)=x^2+y^2+z^2+2xy+2yz+2xz

so

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

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