Evaluate
390625x^{4}+15x^{2}
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390625x^{4}+15x^{2}
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25^{4}x^{4}+15x^{2}
Expand \left(25x\right)^{4}.
390625x^{4}+15x^{2}
Calculate 25 to the power of 4 and get 390625.
25^{4}x^{4}+15x^{2}
Expand \left(25x\right)^{4}.
390625x^{4}+15x^{2}
Calculate 25 to the power of 4 and get 390625.
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