Question

Lagi lagi soal TPA, silahkan dibabat...

Answer 1

lumayan rumit
coba gue jabarin dlu

m²n^5-96=4000. (i)

anggap aja bgni

½ m=4/n
-> ½m x 2=4/n x2
->m=8/n. (ii)


subtitusi pers. ii ke pers i
(8/n)²n^5-96=4000
-> 64/n² xn^5 =4096
-> 64x n³=4096
-> n³=64
->n=4

jadi nilai
½m+5/2n-9= 4/n+5/2n-9
=4/2+5/2 x2 -9
=-2


ada tak ?