Bài 1 :
a, $10^{2}$ – [ 60 : ( $5^{6}$ : $5^{4}$ – 3 x 5 ) ]
b , 50 – [ 50 – $2^{3}$ x 5 ) : 2 + 3 ]
c, 10 – [ ( $8^{2}$ – 48 ) x 5 + ( $2^{3}$ x 10 + 8 ) ] : 28
Bài 1 : a, $10^{2}$ – [ 60 : ( $5^{6}$ : $5^{4}$ – 3 x 5 ) ] b , 50 – [ 50 – $2^{3}$ x 5 ) : 2 + 3 ] c, 10 – [ ( $8^{2}$ – 48 ) x 5 + ( $2^{3}$
By Aaliyah
Đáp án:
Giải thích các bước giải:
a ) 10^2 -[ 60: ( 5^6 :5^4 – 3.5)
= 100 – [ 60 : ( 5^2 -15)
=100 – [ 60 : ( 25-15)]
=100 – [ 60 : 10 ]
=100-6
=94
b) 50- [ 50 – 2^3 . 5 ) :2+3
=50 -(50 -8 .5 ): 5
= 50 – ( 50 -40 ):5
=50 – 10 :5
= 50-2
=48
c) 10 -[ ( 8^2-48 ).5 + ( 2^3 . 10 +8 )] :28
=10 – [ (64 -48 ).5 + ( 8 .10 +8 )] :28
=10 – [ 80 + 88 ] :28
=10 – 6
= 4
Đáp án:
A, 100 – [60 : ( 5² – 3 x5 )]
100 – [60: ( 25 – 15 ) ]
100 -(60:10 )
100-6 = 94
B , 50 – [ 50 -( 8 x5 ) : 2 + 3 ]
= 50 – 10 : 2 + 3
50 – 5 + 3 = 48
C
10 – [( 64-48) x5 + (8 x10 + 8 ) ] : 28
10 – [ 80 + 88 ] : 28
10 – 6 = 4