xy+ (xy - 4x + 3x – 5) - (- 3x² - 4) – (xy + x - 4
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Step-by-step explanation:
xy+(xy-4x+3x-5)-(-3x2 -4)-(xy+x-4)
=xy+xy-4x+3x-5+3x2+4-xy-x+4
=xy+xy-xy-4x+3x-x-5+4+4+3x2
=xy-2x+3+3x2
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