Answer
$175x^2$
Work Step by Step
$25x^2=5\cdot5\cdot x\cdot x$, $35x=5\cdot7\cdot x$, so the GCF is $5x$ and the terms that are "not common" are $5x$ and $7$ so LCD$=5x\cdot5x\cdot7=175x^2$
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