Solving using the discriminant and Vieta's theorem.
For general 8th-grade Algebra textbooks (like Makarychev or Mordkovich which these test books often follow), Skysmart provides verified solutions and explanations.
While a direct digital copy of the entire answer key for this specific author (Voronina O.A.) is not readily available as a single public document, you can find solutions and practice material for this curriculum through several major educational platforms: Recommended Resources for Algebra 8 (GIA/VPR Preparation)
This site often hosts PDF excerpts of test books (like those by Grishina or other authors) which are similar in structure to Voronina's GIA tests. You can view sample rational fraction tests to compare solutions. Common Topics Covered in 8th Grade GIA Algebra
Simplifying fractions, addition, subtraction, and multiplication of rational expressions.


Solving using the discriminant and Vieta's theorem.
For general 8th-grade Algebra textbooks (like Makarychev or Mordkovich which these test books often follow), Skysmart provides verified solutions and explanations.
While a direct digital copy of the entire answer key for this specific author (Voronina O.A.) is not readily available as a single public document, you can find solutions and practice material for this curriculum through several major educational platforms: Recommended Resources for Algebra 8 (GIA/VPR Preparation)
This site often hosts PDF excerpts of test books (like those by Grishina or other authors) which are similar in structure to Voronina's GIA tests. You can view sample rational fraction tests to compare solutions. Common Topics Covered in 8th Grade GIA Algebra
Simplifying fractions, addition, subtraction, and multiplication of rational expressions.