Add: 2x (y-2x+z) and 3y (2z+x+x²)
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3
Answer:
5 xy+6y^2-2x^2+2xz+3x^2y
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2
Answer:
=(2xy-4x^2+2xz)+(6yz+3xy+3x^2y)
=5xy-4x^2+2xz+6yz+3x^2y
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