а) 6а³ - 48 = 6(а³ - 8) = 6(а³ - 2³) = 6(а - 2)(а² + 2а + 4)
б) а² - 16ау + 64у² + 3а - 24у = (а² - 16ау + 64у²) + (3а - 24у) =
= (а - 8у)² + 3(а - 8у) = (а - 8у)(а - 8у + 3)
1,(18)=1+0,(18)
0,(18)=x
18,(18)=100x
18+0,(18)=100x
18+x=100x
18=99x
x=18/99
x=2/11
0,(18)=2/11
1,(18)=1+0,(18) =1+2/11=13/11
2,(27)=7+0,(27)
0,(27)=x
27,(27)=100x
27+0,(27)=100x
27+x=100x
27=99x
x=27/99
x=3/11
0,(27)=3/11
1,(27)=1+0,(27) =1+3/11=14/11
0,(13)=x
13,(13)=100x
13+0,(13)=100x
13+x=100x
13=99x
x=13/99
0,(13)=13/99
2,(23)=7+0,(23)
0,(23)=x
23,(23)=100x
23+0,(23)=100x
23+x=100x
23=99x
x=23/99
x=23/99
0,(23)=23/99
2,(23)=2+0,(23) =2+23/99
Объяснение:
1)6×(a-8)
2) (a-8y)²+3×(a-8y)=(a-8y)×(a-8y+3)