Question

1. x (do kwadratu) + x -1 dla x =-1
2. 2 (-x +4) dla x=-10
3. 1 - y +x dla x =2 y =-1

Answer 1

1. 1-1-1= -1
2. 2*14= 28
3. 1+1+2=4

Answer 2

1.x²+x-1= (-1)²+(-1)-1=1-1-1=-1
2.2(-x+4)=-2x+8=-2(-10)+8=28
3.1-y+x=1-(-1)+2=1+1+2=4