Question

0

Answer 1

@tester97

Answer 2

the particular problem, please

Answer 3

that is the problem it's an essential question.

Answer 4

How question will be simply solved by on example, so that is what i will do :D
2 equation from 2 degree(non linear :D )
\[5 x ^{2}+ 5 x= y \]
\[x ^{2}+ 8 x= y\]
first by substitution:

second by elimination

Thus tehse methods can be used.