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213.1. Identity.

Check the correct answer!

Is the given equation an identity?
1\times 2\times 3\times 4\times 5\times 6\times 7\times 8\times 9=9\times 6\times 4\times 8\times 5\times 7\times 3\times 2
Grade:
7
Subject
Algebra
Theme
Simple algebric expression transformation
Subtheme
Identity

Solve tasks to find hidden Geo point coordinates

  1. Algebra: Mutually opposite monomials.
  2. Algebra: Polynomial opposite polynomial.
  3. Algebra: Diagram y = kx + b (drawing)
  4. Geometry: Inner unilateral and cross angles, alternate interiour angles, parallel straight lines, properties, and parallel signs.
  5. Algebra: Concept of equation.
  6. Algebra: Numerical inequalities and their properties.
  7. Algebra: Diagram y = kx + b (drawing)
  8. Algebra: Diagram y = kx + b (drawing)
  9. Geometry: Narrow, wide, straight, extended, opened, full angle. Equal angles, bisector.
  10. Algebra: Fraction (division) basic properties
  11. Geometry: Circle line, center, radius, diameter, chord, curve.
  12. Algebra: Identical expressions.
  13. Algebra: Connection concept
  14. Algebra: Identity.
  15. Algebra: Numerical equalities.
  16. Algebra: Mutually opposite monomials.
  17. Algebra: Linear inequalities ax + b > 0, where a, b ∈ Q
  18. Geometry: Point belongs (or not) to the straight line (beam, line segment), half-plane, crossed straight lines, beam, opposite beams, line segment, properties.
  19. Algebra: Numerical expression.
  20. Algebra: Polynomial.
  21. Algebra: Numerical normal form
  22. Geometry: Isosceles triangle, sidewall, basis, equilateral triangle, line segment mid-perpendicule, connection between angles and edges in triangle.
  23. Algebra: Subscript concept: base, index, degree
  24. Geometry: Circle line, center, radius, diameter, chord, curve.
  25. Algebra: Fraction (division) basic properties
  26. Geometry: Equal figures, line segments, lengths, midpoints, distance between two points.
  27. Algebra: Monomial
  28. Algebra: Concept of equation.
  29. Geometry: Narrow, wide, straight, extended, opened, full angle. Equal angles, bisector.
  30. Algebra: Notation –x < 3 vai x ∈ (– ∞; 3)
  31. Geometry: Opposite, adjacent angles, perpendiculars against a straight line.
  32. Algebra: Contracted multiplication formula: addition and subtraction square; square difference.
  33. Algebra: Similar elements of polynomials.
  34. Geometry: Three point mutual arrangement.
  35. Algebra: Abscissa axis
  36. Algebra: Notation –x < 3 vai x ∈ (– ∞; 3)
  37. Algebra: Independent variable (argument) and dependent fixed (function)
  38. Algebra: Point coordinates
  39. Algebra: Ordinate axis
  40. Algebra: Numerical normal form
  41. Algebra: Equivalent inequalities
  42. Algebra: Percent and proportions