Найдите суммы одночленов: \( 12x^{\,15}+4x^{\,15}=\) \( x^{\,15}\) \( 14y^{\,99}+ (-9)y^{\,99}=\) \( y^{\,99}\) \( (-70)z^{\,13}+ 10z^{\,13}=\) \( z^{\,13}\) \( -u^{\,2}+ (-7)u^{\,2}=\) \( u^{\,2}\)

Задание

Найдите суммы одночленов:

\(\displaystyle 12x^{\,15}+4x^{\,15}=\)	[ ]\(\displaystyle x^{\,15}\)
\(\displaystyle 14y^{\,99}+ (-9)y^{\,99}=\)	[ ]\(\displaystyle y^{\,99}\)
\(\displaystyle (-70)z^{\,13}+ 10z^{\,13}=\)	[ ]\(\displaystyle z^{\,13}\)
\(\displaystyle -u^{\,2}+ (-7)u^{\,2}=\)	[ ]\(\displaystyle u^{\,2}\)