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B = ( 1024 . 10 . 15625 + 9765625 . 256 ) : ( 256 . 625+78125 . 32 )
=( 160000000+2500000000 ):( 160000+2500000)
= 2660000000 : 2660000
= 1000
B = ( 1.024 . 10 . 15.625 + 9.765.625 . 256 ) : ( 256 . 625+78125 . 32 )
B =( 160.000.000+2.500.000.000 ):( 160.000+2.500.000)
B = 2.660.000.000 : 2.660.000
B = 1.000
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E = 2 − 5 + 8 − 11 + 14 − 17 + ... + 98 − 101 = 2 − 5 + 8 − 11 + 14 − 17 + ... + 98 − 101 = − 3 + − 3 + − 3 + ... + − 3 = − 3.17 = − 51.
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A = 2 − 5 + 8 − 11 + 14 − 17 + ... + 98 − 101 = 2 − 5 + 8 − 11 + 14 − 17 + ... + 98 − 101 = − 3 + − 3 + − 3 + ... + − 3 = − 3.17 = − 51.
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a) c1 := -2/-5+-5/-6+4/5
=2/5+5/6+4/5
=12/30+25/30+24/30
=61/30
c2:=(2/5+4/5)+4/5
=(2/5+4/5)+5/6
=6/5+5/6
=36/30+25/30
=61/30
b)c1:=-3/-4+11/-15+-1/2
=3/4+-11/15+-1/2
=45/60+-44/30+-30/60
-29/30
c2:=3/4+(-11/15+-1/2)
=(3/4+-1/2)+-11/15
=(3/4+-2/4)+-11/5
=1/4+-11/15
=15/60+-44/60
=-29/60
425/5*3=85*3=255
HỌC TỐT!!!
\(\frac{425}{5}\) x \(23\)
= \(85\) x \(23\)
= \(1955\)
~ Hok T ~