ответ: 1) 2(х-1)(2х-2)
2) (7x+1)(9x-1)
Объяснение:
1. =((3х-3)-(х-1))((3х-3)+(х-1))=(3х-3-х+1)(3х-3+х-1)=(2х-2)(4х-4)=2(х-1)(2х-2)
2. =(8x-(x-1))(8x+(x-1))=(8x-x+1)(8x+x-1)=(7x+1)(9x-1)
ответ:1)(4х-4)(2х-2); 2)(63х+1)(65х-1)
Объяснение: 1)(3х-3)2 - (х-1)2=((3х-3)+(х-1))((3х-3)-(х-1))=(3х-3+х-1)(3х-3-х+1)
= 4(х-1)(2х-2)
2)64х2-(х-1)2=(8х-(х-1))(8х+(х-1))=(8х-х+1)(8х+х-1)=(7х+1)(9х-1)
ответ: 1) 2(х-1)(2х-2)
2) (7x+1)(9x-1)
Объяснение:
1. =((3х-3)-(х-1))((3х-3)+(х-1))=(3х-3-х+1)(3х-3+х-1)=(2х-2)(4х-4)=2(х-1)(2х-2)
2. =(8x-(x-1))(8x+(x-1))=(8x-x+1)(8x+x-1)=(7x+1)(9x-1)
ответ:1)(4х-4)(2х-2); 2)(63х+1)(65х-1)
Объяснение: 1)(3х-3)2 - (х-1)2=((3х-3)+(х-1))((3х-3)-(х-1))=(3х-3+х-1)(3х-3-х+1)
= 4(х-1)(2х-2)
2)64х2-(х-1)2=(8х-(х-1))(8х+(х-1))=(8х-х+1)(8х+х-1)=(7х+1)(9х-1)