Question

10.2 elevado a x2-4 = 320

Answer 1

10.2^(x²-4)=320

2^(x²-4)=320÷10

2^(x²-4)=32

2^(x²-4)=2^5

x²-4=5
x²=5+4
x²=9
x=±√9
x=±3