SIMLIFY ( 2X – 5Y +3Z)*2 – ( 2X + 5Y – 3Z )*2
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1). [(2x-5y+3z)(2x-5y+3z)]-[(2x+5y-3z)(2x+5y-3z)]
[4x^2 -10xy+6xz-10xy+25y^2 -15yz+6xz-15yz+ 9z^2] - [4x^2 +10xy-6xz+10xy+25y^2 -15yz- 6xz-15yz+9z^2]
2). -10xy -10xy +12xz -10xy +12xz
3). 24xz-30xy
[4x^2 -10xy+6xz-10xy+25y^2 -15yz+6xz-15yz+ 9z^2] - [4x^2 +10xy-6xz+10xy+25y^2 -15yz- 6xz-15yz+9z^2]
2). -10xy -10xy +12xz -10xy +12xz
3). 24xz-30xy
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