Question

Solve using systematic elimination

Answer 1

\[(D^2-1)x-y=0\]
\[(D-1)x+Dy-0\]

Answer 2

@mahmit2012

Answer 3

\[D(D^2-1)x-Dy=0\]
\[(D-1)x+Dy=0\]

Answer 4

\[D^3x-Dx+Dx-x=0\]

Answer 5

\[D^3x-x=0\]

\[M^3-1=0\]
\[M^3=1\]

\[M=1\]

Answer 6

@Zarkon

Answer 7

(a-b)(a^2-ab+b^2)

\[(m-1)(m^2+m+1)\]=0