Answer
The factors of given polynomial = (7$x^{2}$ - 1) ($x^{2}$ + 5)
Work Step by Step
The given polynomial = 7$x^{4}$ + 34 $x^{2}$ - 5
= 7$x^{4}$ + 35 $x^{2}$ - $x^{2}$ - 5
= 7$x^{2}$($x^{2}$ + 5) - 1($x^{2}$ + 5)
= (7$x^{2}$ - 1) ($x^{2}$ + 5)
The factors of given polynomial = (7$x^{2}$ - 1) ($x^{2}$ + 5)
