Mathlean · Online math workspace
Binomial expander
Expand a binomial power into its polynomial coefficients.
How to use this calculator
Replace (x+1) or its exponent inside the expand command; the starter expands the fourth power.
Tap the math below to edit it and see the result. Once a result is ready, press Tab on a hardware keyboard to accept it. Outside a matrix, Return completes the line; the phone math keyboard has the same Return action.
Try it here
Interactive tools require JavaScript. You can read the guide and example without it.
What to know
Polynomial expansion can grow very large; a noninteger exponent does not give a finite binomial polynomial.
Mathlean combines visual mathematical input with computation and canvas tools. Results depend on the expression and available engine support; check important answers independently.