Question

Factor the polynomial
3x^4 – 2x^2 + 15x^2 –10 by grouping.


Which product is the factored form of the polynomial?

A.
$( - x {}^{2} - 5)(3x {}^{2} + 2)$
B.
$(x {}^{2} - 2)(3x {}^{2} + 5)$
C.
$(x {}^{2} + 5)(3x {}^{2} - 2)$
D.
$(3x {}^{2} - 5)(x {}^{2} + 2)$
​