Answer: D
Explanation:
10x⁵+5x³-14x²-7 [split into 2 parts]
(10x⁵+5x³)+(-14x²-7) [factor each part]
5x³(2x²+1)-7(2x²+1) [put them together]
(5x³-7)(2x²+1)
Now, we know the answer is D.
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