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Question Number 181573 by alcohol last updated on 26/Nov/22
$$\mathrm{25}^{{x}} \:−\:\mathrm{4}^{{x}} \:=\:\mathrm{9}^{{x}} \\ $$$${fimd}\:{x} \\ $$
Commented by mr W last updated on 26/Nov/22
$$\mathrm{5}−\mathrm{2}=\mathrm{3} \\ $$$$\sqrt{\mathrm{25}}−\sqrt{\mathrm{4}}=\sqrt{\mathrm{9}} \\ $$$$\mathrm{25}^{\frac{\mathrm{1}}{\mathrm{2}}} −\mathrm{4}^{\frac{\mathrm{1}}{\mathrm{2}}} =\mathrm{9}^{\frac{\mathrm{1}}{\mathrm{2}}} \\ $$