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vika27000
@vika27000
July 2022
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Помогите очень срочно через 30 мин сдавать
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dasha030105
1. a)=4a²-4b²
б)=9x²+6x+1
в)=0.16a²-100c²
г)=5b²-(a²-4ab+4b²)=5b²-a+4ab-4b²=b²-a+4ab
д)=a²+6ac+9c²+b²-9c²=a²+6ac+b²
2. а)=9x²+21x-(9x²+6x+1)=9x²+21x-9x²-6x-1=15x-1
б)=p²+2p+1-(p²+4p+4)=p²+2p+1-p²-4p-4= -2p-3
в)=12b²+24b-(9b²-25)=12b²+24b-9b²+25=3b²+24b+25
г)=14a+35+5(4a²-49)=14a+35+20a²-245=14a-210+20a²
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vika27000
Спасибо
dasha030105
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Answers & Comments
б)=9x²+6x+1
в)=0.16a²-100c²
г)=5b²-(a²-4ab+4b²)=5b²-a+4ab-4b²=b²-a+4ab
д)=a²+6ac+9c²+b²-9c²=a²+6ac+b²
2. а)=9x²+21x-(9x²+6x+1)=9x²+21x-9x²-6x-1=15x-1
б)=p²+2p+1-(p²+4p+4)=p²+2p+1-p²-4p-4= -2p-3
в)=12b²+24b-(9b²-25)=12b²+24b-9b²+25=3b²+24b+25
г)=14a+35+5(4a²-49)=14a+35+20a²-245=14a-210+20a²