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AlesyaLisa180
@AlesyaLisa180
July 2022
2
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Представьте в виде произведения многочленов выражение:
1) (4а - 3b)(4а + 3b) - 8ас + с²;
2) (а² + 6а)² - 81;
3) а в третий степени - 3а²b - 6ab² + 8b в третий степени
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Answers & Comments
sedinalana
1) (4а - 3b)(4а + 3b) - 8ас + с²=16a
²-9b²-8ac+c²=(16a²-8ac+c²)-9b²=
=(4a-c)
²-(3b)²=(4a-c-3b)94a-c+3b)
2) (а² + 6а)² - 81=(a
²+6a-9)(a²+6a+9)=(a²+6a-9)(a+3)²
3) а
³
- 3а²b - 6ab² + 8b
³=(a-2b)³
12 votes
Thanks 12
ПрофиЗнания
1)16a²-9b²-8ac+c²=(16a²-8ac+c²)-9b²=(4a-c)²-(3b)²= (4a-c-3b)(4a-c+3b)
2)(а² + 6а)² - 9²=(a²+6a-9)(a²+6a+9)=(a²+6a-9)(a+3)²
3)a³
- 3а²b - 6ab² + 8b
³=(a-2b)³
6 votes
Thanks 11
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Answers & Comments
=(4a-c)²-(3b)²=(4a-c-3b)94a-c+3b)
2) (а² + 6а)² - 81=(a²+6a-9)(a²+6a+9)=(a²+6a-9)(a+3)²
3) а ³- 3а²b - 6ab² + 8b³=(a-2b)³
2)(а² + 6а)² - 9²=(a²+6a-9)(a²+6a+9)=(a²+6a-9)(a+3)²
3)a³- 3а²b - 6ab² + 8b³=(a-2b)³