How do you solve the exponential equation 8^(x-1)=2^(x+2)?
1 Answer
Jun 25, 2017
Explanation:
"express the left side in "color(blue)"base 2"
rArr(2^3)^(x-1)=2^(x+2)
rArr2^((3x-3))=2^((x+2))
"since the bases are equal we can equate the exponents"
rArr3x-3=x+2
rArr2x=5
rArrx=5/2
