Question

Log 7 (x^2 + 11) = log 7 15

Answer 1

x = ±2

Explanation:

log 7 (x^2 + 11) = log 7 15

We know that log a ( b) = log a(c) means b =c

x^2 + 11 = 15

Subtract 11 from each side

x^2 = 15-11

x^2 =4

Take the square root of each side

sqrt(x^2) =±sqrt(4)

x = ±2