8xy-3y^2+5x^2-7xy+12x^2-2y^2-3xy+8y^2
2 answers:
8xy-7xy-3xy-3y²-2y²+8y²+5x²+12x² then simplify by combining like terms -2xy+3y²+17x²
Can combine like terms remember yo an move terms around like terms examples x and 2x are like 3xy^2 and 4xy^2 are like x and 2x^2 are not 3x^2y and 3xy are not group like terms together I like doing it in power order, highest to lowest 5x²+12x²-3y²-2y²+8y²+8xy-7xy-3xy= (5x²+12x²)+(-3y²-2y²+8y²)+(8xy-7xy-3xy)= (17x²)+(-3y²)+(-2xy)= 17x²-3y²-2xy
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