Question

(6 {d}^{4} - 4) + (9 + 8 {d}^{3} - 5 {d}^{4} )(6d4−4)+(9+8d3−5d4)
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Answer 1

Step-by-step explanation:

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Answer 2

(6d⁴-4)+(9+8d³-5d⁴)

6d⁴-4+9+8d³-5d⁴

-d⁴+5+8d³