Question

Question is given on the above picture. ​

Answer 1

answer :

3( x - y - x) - { 5y ( 3y + 2x ) + 3x ( 2y - 5x)}

= 3x - 3y - 3x - 15y² + 10x² + 6xy - 15x²

= -3y - 15y²+ 6xy - 15x²