Question

subtract 3xsquare - 5y -2 from 5y -3xsquare + xy and find the value of the result if x =2 ,y = -1​

Answer 1

Step-by-step explanation:

$\\ \qquad\quad\rm{:}\longrightarrow ( - 3x {}^{2} + 5y + xy) - ( {3x}^{2} - 5y - 2) \\ \\ \qquad\quad\rm{:}\longrightarrow - {3x}^{2} + 5y + xy - 3 {x}^{2} + 5y + 2 \\ \\ \qquad\quad\rm{:}\longrightarrow { - 3x}^{2} - 3 {x}^{2} + 5y + 5y + xy + 2 \\ \\ \qquad\quad\rm{:}\longrightarrow - 6 {x}^{2} + 10y + xy + 2$