Mathematical Input

Choose an example and check your answer.

Maths / Algebra

Expand and Collect

Expand the brackets and collect like terms.

2(x+3)+x

Assume $x\in\mathbb{R}$ .

Automatic checking supports expanded polynomials in x with like terms collected, constant denominators and integer powers. Other notation may need self-review.

Your Answer

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Ctrl/Cmd + Enter to continue. Enter adds a new line.

Checked Answers: 0

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Quick Help

Enter: Check a single-line answer.
Tab / Shift + Tab: Move between editable maths slots.
More Symbols: Open additional categories.
Tools: Copy, clear or edit LaTeX source.

Keyboard Help

Checking an Answer: Press Enter in a single-line maths field, or select Check Answer. In LaTeX source or multiline notation, use Ctrl/Cmd + Enter or Check Answer.
Moving between Slots: Use Tab and Shift + Tab in the maths field, or the next and previous slot arrows. Fill the empty boxes before checking.
Fractions and Roots: Select part of your expression to wrap it in a fraction or root. Without a selection, these keys insert empty slots.
Square, Cube and Power: These keys use your selection or the complete factor before the caret. Select a whole sum or product to raise it to a power together.
Symbols and Variants: More Symbols opens additional categories. Hold a marked key, press Arrow Down while it is focused, or choose Key Variants for other forms. Use arrow keys to move between category tabs.
Editing and Source: Tools lets you select all, clear the visual expression, copy LaTeX or edit its source. Undo and Redo are beside the slot arrows. Use visual editor returns from source to the maths field.