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20. From the sum of 2x² + 3xy - 5 and 7 + 2xy – x? subtract 3xy + x2 - 2.​

Answer»

Step-by-step explanation:

2x² + 3XY - 5 + 7 + 2XYX -(3xy + x² -2)

= 2x² +5XY +2-x-3xy-x²+2

= x²+2xy -x+4



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