a) =(-4).(-25).125.(-8).(-11)
= 100.(-1000).(-11)
= (-100000).(-11)
= 1100000
b) =(-823)+823 . 812-812.823
=(-823)+(823.812-812.823)
= (-823) +0
=-823
k giùm mình nha!
Hok tốt!
a) ( -4)×125×(-25)×(-11)×(-8)
= [ -4 x ( -25 ) ] x ( -8 x 125 ) x ( -11 )
= 100 x ( -1000) x ( -11 )
= 1100000
b) (-823)× ( 1-812)-812×823
= 823 ( 812-1) - 812 x 823
= (823 x 812 - 812 x 823) - 823
= -823
a, \(\left(-4\right).125.\left(-25\right).\left(-11\right).\left(-8\right)\)
\(=\left[\left(-4\right).125\right].\left[\left(-25\right).\left(-8\right)\right].\left(-11\right)\)
\(=\left(-500\right).200.\left(-11\right)\)
\(=\left(-100000\right).\left(-11\right)\)
\(=1100000\)
b, \(\left(-823\right).\left(1-812\right)-812.823\)
\(=\left(-823\right).\left(-811\right)-812.823\)
\(=823.811-812.823\)
\(=823.\left(811-812\right)\)
\(=823.\left(-1\right)\)
\(=-823\)
