Question

If X = 2x - 3xy + 4y?. Y = x2 + 2xy - 3y? Z=-4x2 +5xy + y find X + Y+Z
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Answer 1

Answer:

2x+4xy+2y²-3x

Step-by-step explanation:

(2x-3xy+4y²)+(x²+2xy-3y²)+(-4x²+5xy+y²)

= 2x-3xy+4y²+x²+2xy-3y²-4x²+5xy+y²

= 2x-3xy+5xy+2xy+4y²-3y²+y²+x³-4x²

= 2x+4xy+2y²-3x²