Percentage
MathAnswer the three percentage questions people ask most, with the right inputs for each one.
- What is X% of Y?
- What percentage is X of Y?
Inputs
Question mode and two values
Output
Percentage and absolute result
Open calculator
MathUpdated · Aug 2026
Polynomial Calculator
Add and subtract up to four polynomials, combine like powers, and keep the operation visible.
Start with your numbers
Polynomial Calculator
Change the inputs that matter to your decision. Optional assumptions stay collapsed until you need them.
Combine polynomials
Use x^2 notation and add or subtract up to four expressions.
OptionalOptional terms
Polynomial answer
Simplified result
2x^2 + 2x
Like powers are combined and the original operations are preserved.
Expression(x^2 + 2x + 1) + (x^2 − 1)
Combine like powers in (x^2 + 2x + 1) + (x^2 − 1).
Collect coefficients for each power of x.
(x^2 + 2x + 1) + (x^2 − 1) = 2x^2 + 2x
This tool combines polynomials; it does not expand products such as (x + 1)(x − 1).
/ 01 · FAQ
Frequently asked questions
Practical notes about the inputs, assumptions, and result.
Use x^2 for a squared term, for example 3x^2 - 2x + 1. The calculator also accepts a superscript square in pasted input.
/ 02 · RELATED
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Output
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MathSummarize a dataset with mean, median, mode, range, and standard deviation.
- What is the center of this dataset?
- How spread out are the values?
Inputs
A list of values
Output
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