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Laws of Exponents for Real Numbers

Solve: 8x7+x...

Question

Solve:
$8 x^{7} + x^{7} + x = ?$
if $x = 7$

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Solution

${8 x}^{7} + x^{7} + x = {9 x}^{7} + x$
Bow putting $x = 7$ we have
${9 (7)}^{7} + 7 = 7411887 + 7 = 74, 11, 894$

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