a²-2a-8=(a+2)(a-4) 十字相乘法即可
a²b²-2ab-8=(ab+2)(ab-4) 把a(bǔ)b當(dāng)做上一題的a 十字相乘法即可
a²-2ab-8b²=(a+2b)(a-4b) 十字相乘法即可
(a+4)²-2a-8=(a+4)(a+4)-2(a+4)=(a+4)(a+2)
分解因式:a²-2a-8,a²b²-2ab-8,a²-2ab-8b²,(a+4)²-2a-8.對(duì)的懸賞100分,騙人是dog
分解因式:a²-2a-8,a²b²-2ab-8,a²-2ab-8b²,(a+4)²-2a-8.對(duì)的懸賞100分,騙人是dog
數(shù)學(xué)人氣:223 ℃時(shí)間:2020-10-01 10:32:25
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