Tolong dibantu qaqa☺

Ane bantu yang 1. b ya

limx->3 x^2-10x+21/x^2-9

limx->3 (x-7)(x-3) / (x+3)(x-3)

*dicoret*

limx->3 x-7 / x+3

= 3-7 / 3+3
= -4/6
= -2/3