Question

Tentukan x dari nilai mutlak a. 2|4x-6|=10 b. |x+2/x-2| = 5 tolong bantu yah,,makasih

Answer 1

A.2|4x-6| = 10
<=> |4x-6| = 5 (dikuadratkan)
<=> 16x²-48x+36 = 25
<=> 16x²-48x+11 = 0
<=> (4x-11)(4x-1) = 0
<=> x=11/4  |  x=1/4

b. (dikuadratkan)
= 25
x²+4x+4 = 25x²-100x+100
24x²-104x+96 = 0
8(3x²-13x+12) = 0
8(3x-4)(x-3) = 0
x=4/3  |  x=3