Question

Find x
7^5x+7 = 2

Answer 1

\(7^5(x)+7=2\) ?

Answer 2

7^(5x+7) = 2

Answer 3

@hartnn

Answer 4

does this question belong to topic logarithms ?

Answer 5

yes

Answer 6

so take log on both sides, what u get ?

Answer 7

log7^5x+7 = log
2

Answer 8

u know, log x^n = n log x ?

Answer 9

(5x+7)log7 = log 2

Answer 10

now try to isolate x

Answer 11

u get
x= (log 2/ log 7 -7 )/5

Answer 12

or x= (log[7] 2-7)/5