Toán Lớp 6: (5.(2^2.3^2 )^6-2.(2^2.3)^14.3^4)/(5.2^28.3^18-7.2^29.3^18 )
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Toán Lớp 6: (5.(2^2.3^2 )^6-2.(2^2.3)^14.3^4)/(5.2^28.3^18-7.2^29.3^18 )
Comments ( 2 )
= (5 x 2^18 x 3^18 x 2^10 – 2^28 x 3^14 x 3^4) / ( 5.2^28.3^18 – 7.2^29.3^18 )
= (5 x 2^28 x 3^18 – 2^28 x 3^18) / ( 5.2^28.3^18 – 7.2^29.3^18 )
= [ 2^28 x 3^18 x ( 5-1)] / [ 2^28 x 3^18 x( 5-7 x 2)]
= (5-1)/ (-9)
= -4/9
= ((5 . 2^18 . 3^18 . 2^10 – 2^28 . 3^14 . 3^4)) / (( 5.2^28. 3^18 – 7.2^29. 3^18 ))
= ((5 . 2^28 . 3^18 – 2^28 . 3^18)) / (( 5. 2^28. 3^18 – 7. 2^29. 3^18 )
= ([ 2^28 . 3^18 . ( 5-1)]) / ([ 2^28 . 3^18 .( 5-7 . 2)])
= (5-1)/ (-9)
= -4/9