When writing wit LaTeX and using the \binom function, the output has a line:
while the result should not have it.
I used the website https[:]//latexeditor[.]lagrida[.]com to show the correct format.
To test it yourself, just put a LaTeX expression with \binom.
for me it was:
(1 - x^6)^{10}
\;=\;
\sum_{j=0}^{10} \binom{10}{j} (1)^{10-j}(-x^6)^j
\;=\;
\sum_{j=0}^{10} \binom{10}{j}(-1)^j\,x^{6j}.