(3a平方+2a-8)平方-(a平方-2a-8)平方

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(3a平方+2a-8)平方-(a平方-2a-8)平方
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(3a平方+2a-8)平方-(a平方-2a-8)平方
(3a平方+2a-8)平方-(a平方-2a-8)平方

(3a平方+2a-8)平方-(a平方-2a-8)平方
(3a²+2a-8)²-(a²-2a-8)²=[(3a²+2a-8)+(a²-2a-8)][(3a²+2a-8)-(a²-2a-8)]
=(4a²-16)(2a²+4a)
=8a(a+2)(a-2)(a+2)
=8a(a+2)²(a-2)

(3a²+2a-8)²-(a²-2a-8)²
=[(3a²+2a-8)+(a²-2a-8)][(3a²+2a-8)-(a²-2a-8)]
=(4a²-16)(2a²+4a)
=8a(a+2)²(a-2)

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