Question

subtract 2x(x-4y+5) from (10z-3y+2x)​

Answer 1

$\sf 2x\left(x-4y+5\right)-\left(10z-3y+2x\right)\\\\\\=2x^2-8xy+10x-\left(10z-3y+2x\right)\\\\\\=2x^2-8xy+10x-10z+3y-2x\\\\\\\to \boxed{\sf \red{\sf=2x^2-8xy+8x+3y-10z}}$

Answer 2

10z-3y+2x - 2x²+8xy-10x
= 10z-3y-8x-2x²+8xy