A = 1 + 3 + 32 + ... + 310
3A = 3 + 32 + 33 + ... + 311
3A - A = (3 + 32 + 33 + ... + 311) - (1 + 3 + 32 + ... + 310)
2A = 311 - 1
2A + 1 = 311
Hay viet 2A + 1 duoi dang mot luy thua
Cho A= 1 + 3 + 32 + ..... + 32007
cho A=1+2+2^2 +2^3 +...+2^200 .hay viet A+1 duoi dang mot luy thua
viet so 729 duoi dang 1 luy thua voi 3 co so khac nhau ( so mu > 1)
Tính A=1+3+32+...+39+310 sao cho 2A+1 duoi dang luy thua
Viet duoi dang luy thua 2^10•3^2•5•12
Hay viet cac so sau duoi dang luy thua cua 10:376473654;346754;645767456,38487
cho a =1+2+22+23+.....+2200.hay tinh A+1 duoi dang 1 luy thua
trong cac so sau , so nao la luy thua cua 1 so tu nhien voi so mu lon hon 1 gồm: 8, 10, 16, 64, 125, 144, 1000 (chu y rang nhung so tu nhien co nhieu cach viet duoi dang luy thua?
viet cac tich sau duoi dang 1 luy thua
a/ -8 . -3 . +125
b/ 27 . -23 . -7 .+49
