If M = 2x² + 3x²y + 3xy - 5y², N= - 5x² - 4x²y + 2xy + 3y² and 0 = - 3x²– x²y+5xy-2y² show M+N-O=0
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danni solve chey bro vastundi
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M+N-O
= 2x^2 + 3x^2y + 3xy - 5y^2 + ( -5x^2 - 4x^2y + 2xy + 3 y^2) - ( -3x^2 - x^2y + 5xy - 2y^2)
= 2x^2 + 3x^2y + 3xy - 5y^2 - 5x^2 - 4x^2y + 2xy + 3 y^2 + 3x^2 + x^2y - 5xy + 2y^2
= 5x^2 + 4x^2y + 5xy + 5y^2 - 5x^2 - 4x^2y - 5xy
= 0
M+N-O= 0.
hence, proved
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