Question

Tolong jawab beserta caranya (;

Answer 1

2x-3/x=5
kalikan dg x akn mnjadi
2x^2 -3=5x
pindah ruas
2x^2 - 5x -3=0
faktorkn
(2x+1)(x-3)=0
x=-1/2 atau x = 3
JD jwbnya nilai x itu -1/2 atau 3

ambil x = -1/2
=4(-1/2)^2 - 9/(-1/2)^2
= 4(1/4) - 9/ (1/4)
= 1 -36
=-35

untuk x = 3
4(3)^2 - 9/(3)^2
= 4(9) - 9/(9)
=36-1
=35

Answer 2

2x - 3/x = 5
Kalikan dengan x
2x² - 3 = 5x
2x² - 5x - 3 = 0
(2x - 1)(x - 3) = 0

Ambil x = 1/2
4(1/2)² - 9/(1/2)²
= 4(1/4) - 9/(1/4)
= 1 - 36
= -35

Ambil x = 3
4(3)² - 9/(3²)
= 4(9) - 9/9
= 36 - 1
= 35

Yang berlaku adalah 35 [C]