Answer
(2$y^{2}$+7)($y^{2}$-5)
Work Step by Step
2$y^{4}$-10$y^{2}$+7$y^{2}$-35=2$y^{2}$($y^{2}$-5)+7($y^{2}$-5)=
(2$y^{2}$+7)($y^{2}$-5)
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