Đáp án:
`B=422/3`
Giải thích các bước giải:
`B=((-3)^6*15^3+9^3*(-15)^6)/((-3)^10*5^3*2^3)`
`B=(3^6*3^3*5^3+(3^2)^3*3^6*5^6)/(3^10*5^3*2^3)`
`B=(3^(6+3)*5^3+3^(2*3+6)*5^6)/(3^10*5^3*2^3)`
`B=(3^9*5^3+3^12*5^6)/(3^10*5^3*2^3)`
`B=(3^9*5^3*(1+3^3*5^3))/(3^10*5^3*2^3)`
`B=(1+27*125)/(24)`
`B=(1+3375)/24`
`B=(3376)/24`
`B=422/3`
_______________________
#phamuyen15032008
