Answer
$5x^{7/5}+40x^{1/5}+c$
Work Step by Step
$7x^{2/5}+8x^{-4/5}$
${7x^{7/5}/{7/5}}+{8x^{1/5}/{{1/5}}}+c$
$5x^{7/5}+40x^{1/5}+c$
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