Tính giá trị biểu thức
13*58+32*26*2+52*10
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13 x 58 x 4 + 32 x 26 x 2 + 52 x 10
= 13 x 4 x 58 + 32 x 52 + 52 x 10
= 52 x 58 + 32 x 52 + 52 x 10
= 52 x ( 58 + 32 + 10 )
= 52 x 100
= 5200
\(13-\sqrt{\left(\sqrt{2}-3\right)^2}\)
=13-/\(\sqrt{2}\)-3/
=13-(3-\(\sqrt{2}\))
=13-3+\(\sqrt{2}\)
=10\(\sqrt{2}\)
\(\sqrt{3-2\sqrt{2}}-\sqrt{6-4\sqrt{2}}\)
\(=\sqrt{2-2\sqrt{2}+1}-\sqrt{4-2.2\sqrt{2}+2}\)
\(=\sqrt{\left(\sqrt{2}-1\right)^2}-\sqrt{\left(2-\sqrt{2}\right)^2}\)
\(=\sqrt{2}-1-2+\sqrt{2}\)
\(=2\sqrt{2}-3\)
1) \(13-\sqrt{\left(\sqrt{2}-3\right)^2}=13-\left|\sqrt{2}-3\right|=13+\sqrt{2}-3=10+\sqrt{2}\)
2) \(\sqrt{3-2\sqrt{2}}-\sqrt{6-4\sqrt{2}}=\sqrt{\left(\sqrt{2}-1\right)^2}-\sqrt{\left(2-\sqrt{2}\right)^2}=\left|\sqrt{2}-1\right|-\left|2-\sqrt{2}\right|=\sqrt{2}-1-2+\sqrt{2}=2\sqrt{2}-3\)
1/13.58.4+32.26.2+52.10
=52.58+52.32+52.10
=52(58+32+10)=52.100=5200
2/15.37.4+120.21+21.5.12
=60.37+120.21+60.21
=60(37+2.21+21)=60.100=6000
a,D=1+2+4+8+16+32+64+128+256+512+1024
D=(1+2)+4+8+16+32+64+128+256+512+1024
D=(4+4)+8+16+32+64+128+256+512+1024
D=(8+8)+16+32+64+128+256+512+1024
D=(16+16)+32+64+128+256+512+1024
D=(32+32)+64+128+256+512+1024
D=(64+64)+128+256+512+1024
D=(128+128)+256+512+1024
D=(256+256)+512+1024
D=(512+512)+1024
D=1024+1024
D=2048
13 x 58 + 32 x 26 x 2 + 52 x 10
= 13 x 58 + 32 x 13 x 2 x 2 + 13 x 4 x 10
= 13 x 58 + 128 x 13 + 13 x 40
= 13 x (58 + 128 + 40)
= 13 x 226
= 2938
13 x 58 + 32 x 26 x 2 + 52 x 10
= 13 x 58 + 32 x 13 x 2 x 2 + 13 x 4 x 10
= 13 x 58 + 128 + 13 x 40
= 13 x ( 58 +128 + 40 )
= 13 x 226
= 2938