2 because 8-6 is 2 and a Richet Scale I dont Know
Answer:
1st, 3rd, and 4th options
Step-by-step explanation:
If u are looking for factorization this is the way
(x-y)(x-y+1)² -2(x-y)(x-y+1)+(x-y)=
(x-y)[(x-y+1)^2-2(x-y+1)+1]=
(x-y)[(x-y+1)^2-2(x-y+1)+1^2]=
(x-y)[(x-y+1)-1]^2=(x-y)(x-y+1-1)^2
(x-y)(x-y)^2=
(x-y)^3
Max has 21 and Mene has 43 the equation would be 21 + 43 = 64
they have 64 all together