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Full course now has separate subject rooms

Mathematics, English, and Economics each have their own practice area, so it is clearer what you are training.

In the early full course, subjects were harder to separate. On 19 June we introduced clearer subject rooms for Full Course subscribers. It became easier to see where mathematics ends, where English begins, and where economics practice lives. That made navigation simpler and made daily practice more intentional.

bbe-school.com/practice/mathematics
MathematicsEnglishEconomics
Mathematics roomMATH-D.12Domains Calculator

Domain of √(x − 2) / (x − 5)

Decide which statements about the domain are true.

  1. #StatementTrue
  2. A.

    The expression is defined for all real x.

  3. B.

    x = 5 must be excluded because the denominator is zero.

  4. C.

    x = 2 is included because √0 is defined.

  5. D.

    The domain is x ≥ 2 and x ≠ 5.

  6. E.

    Negative values of (x − 2) are allowed under the square root.

Check Answers / Submit
Mathematics room: open the calculator, close it, mark domain statements, then Check Answers.

Steps

How to use the subject rooms well

A short approach that keeps practice focused.
bbe-school.com/flashcards/mathematics

Subject room · Algebra

Formula cards

1 / 32

Quadratic

Δ = b² − 4ac

Tap the grid to flip

Discriminant cases

  • Δ < 0no real roots
  • Δ = 0one real root
  • Δ > 0two real roots
Know
Algebra flashcards: flip Discriminant Δ, mark Know, then reveal Vertex form.

Available with Full Course access.

See full course subjects