If x\(^2\) + 4 = 0, then x ?

Given that \(\frac{5^{n +3}}{25^{2n -3}}\) = 5º, find n

Simplify \((216^{{\frac{1}{3}}})^{-2}\)

Divide the LCM of 15abc and 20a\(^2\)bc by their HCF

Solve \(5^{2(x - 1)} \times 5^{x + 1} = 0.04\)