1.

Simplify: {[(x4)3 - 2a] [(x2a + 1)a]} ÷ {[(x3a - 5)2] [(xa + 1)2a - 1]}

A. x4a
B. x23 - 14a
C. x22 - 7a
D. x23
Answer» C. x22 - 7a


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