Answer
$5(7x^2+2x- 10)$.
Work Step by Step
The given expression is
$=35x^2+10x-50$
Rewrite all the terms in the factor of $5$.
$=5\cdot 7x^2+5\cdot 2x-5\cdot 10$
Factor out $5$.
$=5(7x^2+2x- 10)$.
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