TL;DR: Just type sqrt( in any WebAssign answer box, drop in your number or expression, then close with ). Example: sqrt(16) becomes √16. Prefer clicking? Use the calcPad toolbar. Or go old-school with exponent notation: (x^(1/2)).
What's Happening
WebAssign only understands plain text, so you can’t paste the √ symbol directly.
WebAssign treats math input like plain text instead of fancy symbols. That means no pasting a √ symbol—you’ve got to use the platform’s text-based sqrt() syntax. This rule’s been around since at least 2023 and hasn’t changed in 2026 WebAssign Help. Whether you type manually or click through calcPad, the syntax always renders correctly.
Step-by-Step Solution
Enter square roots with these exact steps.
Follow these steps to type square roots without errors.
- Click the answer field to wake it up. The calcPad toolbar should pop up on the right or bottom.
- Type sqrt(, then your number or expression, then ).
Example: sqrt(81) → √81 - Hit Enter, click “Submit,” or just move to the next field. WebAssign turns your text into a √ symbol automatically.
- Want to click instead? Click the √x button in calcPad, pick “Square Root,” then type inside the sqrt( ) box that appears.
If This Didn’t Work
Try these alternatives when sqrt() isn’t accepted or you need more control.
If sqrt() isn’t playing nice, switch to one of these methods.
- Exponent Notation: A square root is just a number raised to the ½ power. Type x^(1/2) for roots, or 25^(1/2) for numbers.
- Check Parentheses: Every sqrt( needs a matching ). Miss one and you’ll get an error. Nested roots? Use braces: sqrt(x^2 + 9) WebAssign Student Guide (PDF).
- Official Notation Reference: Open calcPad and click the “?” (Help) icon. Choose “Notation Guide” for the full list of allowed functions and symbols.
Prevention Tips
Build good habits early to avoid formatting errors on graded work.
Small habits now save big headaches later.
- Memorize Core Shortcuts: Use ^ for exponents (x^3), _ for subscripts (H_2O), and sqrt() for roots. The system stops reading symbols after a space or any non-symbol character.
- Always Start with calcPad: If you’re new, let the toolbar insert complex notation. It stops typos before they happen and guarantees proper formatting before you hit submit WebAssign Support.
- Test in a Practice Assignment: Many courses include a “WebAssign Basics” assignment that doesn’t count toward your grade. Use it to experiment with sqrt(), fractions, and Greek letters before the real work starts.
Quick Fix Summary
TL;DR: In any WebAssign answer box, type sqrt(, add your number or expression, then close with ). Example: sqrt(16) becomes √16. Prefer clicking? Use the calcPad toolbar. Or type exponents with ^ and subscripts with _.
If This Didn't Work
If the sqrt() command isn’t accepted or you’re dealing with something more complex, try these other approaches.
When sqrt() refuses to cooperate—or you’re working with something trickier—switch to one of these methods.
- Use Exponent Notation: A square root is the same as raising a number to the ½ power. Type x^(1/2) for roots, or 9^(1/2) for a specific number.
- Check for Syntax Errors: Make sure every sqrt( has a closing ). One missing parenthesis will break things. For nested operations, like the square root of an exponent, wrap it in braces: sqrt(x^2+4).
- Consult the WebAssign Notation Guide: WebAssign’s official help docs are packed with examples. If you keep hitting walls, search “WebAssign notation guide” or “calcPad help” from your course dashboard or the main WebAssign site (WebAssign).
