Question

10. If log2 (x²-5)=2 then find x​

Answer 1

$log_{2}( {x}^{2} - 5) = 2 \\ {x}^{2} - 5 = {2}^{2} \\ {x }^{2} = 4 + 5 \\ {x}^{2} = 9 \\ x = |3| = \frac{ + }{} 3 \\ using \\ log_{a}(b) = x \\ b = {a}^{x} \\ we \: solved \: this \: question \\ hope \: it \: helps$