Jawabanmu

2014-09-09T10:15:16+07:00
Jumlah tak hingga adaalaah = a/(1-r)

7+7√7=a/(1- 1/49√7)

7+7√7=a/(49- 1)√7/49)

a= 49 (7+7√7)/48 √7

 \frac{49(7+7 \sqrt{7})}{48 \sqrt{7} } . \frac{ \sqrt{7} }{ \sqrt{7} } = \frac{49(7 \sqrt{7}+7 . 7) }{48 . 7} =

=49/48 (49+7√7)

8 4 8
makasi banyak tolong dibantu lagi ya???