Question

-8xy+4y-4x-3y+2x+8xy,при y=10,3;x=-4,4

Answer 1

-8x(-4.4)x10.3+4x(-4.4)-4x10.3-3x10.3+2x(-4.4)+8x(-4.4)x10.3=362.56-17.6+41.2-30.9-8.8-362.56=-16.1