求解 (3√(x^2-64))(x^2+12x-64)?

matthew

2016-10-12 10:06 am

回答 (1)

pui

2016-10-16 1:35 am

(3√(x^2-64))(x^2+12x-64)
=3(x-4)(x+16)√[(x-8)(x+8)]

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