Ответ:
Объяснение:
1) =(x+5-1)(x+5+1)=(x+4)(x+6)
2) =(x-8-3)(x-8+3)=(x-11)(x-5)
3) =(6-a-2)(6+a+2)=(4-a)(8+a)
4) =(7m-3m+7)(7m+3m-7)=(4m+7)(10m-7)
5) =(3b-b-1)(3b+b+1)=(2b-1)(4b+1)
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Ответ:
Объяснение:
1) =(x+5-1)(x+5+1)=(x+4)(x+6)
2) =(x-8-3)(x-8+3)=(x-11)(x-5)
3) =(6-a-2)(6+a+2)=(4-a)(8+a)
4) =(7m-3m+7)(7m+3m-7)=(4m+7)(10m-7)
5) =(3b-b-1)(3b+b+1)=(2b-1)(4b+1)