Question

(- 1/4 xy) - ( -2/3x²y²) + xy + (-1/2x²y²)

Answer 1

= ( - 1/4xy + xy ) + ( 2/3x^2y^2 - 1/2x^2y^2 )
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- 1/4 + 1 = 3/4
2/3 - 1/2 = 4/6 - 3/6 = 1/6
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3/4xy + 1/6x^2y^2 ( Ответ )