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4^10 x 8^15 = (2^2)^10 x (2^3)^15 = 2^20 x 2^45 = 2^65
\(4^{10}=\left(2^2\right)^{10}=2^{20}\)
\(8^{15}=\left(2^3\right)^{15}=2^{45}\)
vi \(2^{20}< 2^{45}\) nen \(4^{10}< 8^{15}\)
4^10. 8^15=(2^2)^10.(2^3)^15=2^2.20.2^3.15=2^20.2^45=2^20+45=2^65