Question

Add 3x^2-10xy+8y^2,7x^2+10xy-3y^2,-10^2-5y^2

Answer 1

Step-by-step explanation:

$( {3x}^{2} - 10xy + {8y}^{2}) + ( {7x}^{2} + 10xy - {3y}^{2} ) + ( - {10}^{2} - {5y}^{2} ) \\ then \: separate \: like \: terms \\ ( {3x}^{2} + {7x}^{2} ) + ( - 10xy + 10xy) + ( {8y}^{2} - {3y}^{2} - {5y}^{2} ) + ( { - 10}^{2}) \\ {10x}^{2} + 0 + 0 + ( { - 10}^{2} ) \\ {10x}^{2} + ({ - 10}^{2} )$