Question

(2x²-15y²+8xy)-(-5x²+3y²-10xy)=​

Answer 1

$\left(2x^2-15y^2+8xy\right)-\left(-5x^2+3y^2-10xy\right)\\\\=2x^2-15y^2+8xy-\left(-5x^2+3y^2-10xy\right)\\\\=2x^2-15y^2+8xy+5x^2-3y^2+10xy\\\\Simplificando..\\=7x^2+18xy-18y^2$

Resultado Final:

$=7x^2+18xy-18y^2$