Question

Oblicz wartość wyrażenia (x+6)+(x+5)+(x+4)+(x+3)+(x+2)dlax=-4

Answer 1

(-4+6)+(-4+5)+(-4+4)+(-4+3)+(-4+2)=2+1+0-1-2=3+0-1-2=3-1-2=2-2=0

Answer 2

(-4+6)+(-4+5)+(-4+4)+(-4+3)+(-4+2)=
2+1+0+(-1)+(-2)=
2+1+0-1-2=0

Answer 3

(x+6)+(x+5)+(x+4)+(x+3)+(x+2) = x+6+x+5+x+4+x+3+x+2=5x+20

5 * (-4) + 20 = -20 + 20 = 0