Question

tính : B = 12 . 10⁸ + 17 . 10⁷ + 5.10⁴ + 3

Answer 1

\(B=12.10^8+17.10^7+5.10^4+3\)

\(B=12.10^4.10^4+17.10^4.10^3+5.10^4+3\)

\(B=12.10000.10^4+17.1000.10^4+5.10^4+3\)

\(B=120000.10^4+17000.10^4+5.10^4+3\)

\(B=(120000+17000+5).10^4+3\)

\(B=137005.10^4+3\)

\(B=137005.10000+3\)

\(B=1370050003\)

Answer 2

\(B=12\cdot10^8+17\cdot10^7+5\cdot10^4+3\)

\(=12\cdot10^8+17\cdot10^7+5\cdot10000+3\)

\(=12\cdot10^8+17\cdot10^7+50000+3\)

\(=12\cdot10^8+17\cdot10^7+50003\)