Final answer to the problem
$\left(1+5x\right)\left(1-5x+25x^2\right)$
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Step-by-step Solution
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1
Multiply $1$ times $-5$
$\left(1+5x\right)\left(1-5x+25x^2\right)$
Final answer to the problem
$\left(1+5x\right)\left(1-5x+25x^2\right)$