Question

Selesaikan persamaan eksponensial berikut.
2 pangkat x ditambah 2 pangkat x+3 = 72

Answer 1

2^x + 2^(x+3) = 72
2^x + 2^x + 2^3 = 72
2.2^x + 8 = 72
2.2^x = 64
2^x = 32
2^x = 2^5
x = 5