Question

Tolong dong nih plizzz,,, yg jago mtk

Answer 1

A. (-2^7)^4=2^x
-2^28=2^x
2^28=2^x
jadi x= 28
b. (5^-1)^-7=5^x
5^7=5^x
jd x=7
c. (2^3)^4x . (2^4)^5x-1=(2^2)^10x-3
2^12x . 2^20x-4=2^20x-6
2^ 12x+20x-4=20x-6
2^32x-4=20x-6
32x-4=20x-6
32x-20x=-6+4
12x=-2
x=-2/12=-1/6
d.(3^18/3^12)^-5=3^5x-4
(3^6)^-5=3^5x-4
3^-30=3^5x-4
jadi -30 = 5x-4
-30 +4=5x
-26=5x
x=-26/5=-5 1/5
e. (3^-18/3^16)^-3=3^4-2x
(3^-34)^-3=3^4-2x
3^102=3^4-2x
102 = 4- 2x
2x= 4-102
2x= -98
x = -98/2=-49
2a. 5^4x . 5^9x=5^x+24
5^13x=5^x+24
13x= x+24
12x=24
x= 24/12=2
tanda ^ = pangkat
sorry yg b dan c dah capek nulise......