Math Help?
回答 (1)
2016-06-20 7:19 am
Identity : (a - b)⁴ = a⁴ + 4a³b + 6a²b² + 4ab³ + b⁴
16x⁴ - 96x³y + 216x²y² - 216xy³ + 81y⁴
= (2x)⁴ + 4(2x)³(3y) + 6(2x)²(3y)² + 4(2x)(3y)³ + (3y)⁴
= (2x - 3y)⁴
16x⁴ - 96x³y + 216x²y² - 216xy³ + 81y⁴
= (2x)⁴ + 4(2x)³(3y) + 6(2x)²(3y)² + 4(2x)(3y)³ + (3y)⁴
= (2x - 3y)⁴
收錄日期: 2021-04-18 15:25:10
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20160619231321AAHCtsI