Question

是⛄️啦！🥴

求解這兩題🙏

1
D. 已知
3 3
2/
=0.076923.化簡 0.230769-
T4
13
O
13
3.
2
C
9
( is
E. 若a為整數,(-3-2)=-26+ad3,则a=
39
(a-by?
L

Answer 1

宿願-jim

0.230769230769…÷0.076923076923…=3
是1/13的3倍
所以是 (1/13)×3=3/13

(√3-2)³
=(7-4√3)(√3-2)
=7√3-14-12-8√3
= -26-√3
a=-1