Заложите на множители:
1) a³+8b³+a²-2ab+4b²
2) y²-x²-6x-9
3) (y+5)²-16c²
С решением.
1) a³+8b³+a²-2ab+4b²
2) y²-x²-6x-9
3) (y+5)²-16c²
С решением.
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Answers & Comments
= (a+2b)(a²-2ab+(2b)²)+ (a²-2ab+(2b)²) =(a²-2ab+(2b)²) *(a+2b+1)
2) y²-x²-6x-9 =2) y²-(x²+6x+3²) = y²-(x+3)²=(y-x-3)*(y+x+3)
3) (y+5)²-16c²=(y+5-4c)*(y+5+4c)