Question

(ii) log (x^2 - 21) = 2​

Answer 1

Answer:

log (x^2 - 21) = 2

= x = ± 11

Step-by-step explanation:

log(x² - 21) = 2

=> log(x² - 21) = log = 100

=> x² - 21 - 100 = 0

=> x² - 121 = 0

=> x² = 121

=> x = ± √121

=> x = ± 11

Hope it is helpful to you