Question

Find the value of m for which 4m × 4 power 3 = 4 power 5

Answer 1

answer above question is m=4

Answer 2

some confusion for your question .
if question is
$4^m\times 4^3 = 4^5$
then, use concept ,
x^p . x^r = x^(p + r)

$4^{(m + 3)} = 4^5$
then, use concept ,
x^p = x^r => p = r

so, m + 3 = 5
m = 5 - 3 = 2

hence, m = 2