thức hiện phep tính:
60,15 – 34 x 2,15
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20,05x14+40,1x16+60,15x18
=20,05x14+20,05x2x16+20,05x3x18
=20,05x14+20,05x32+20,05x54
=20,05x(14+32+54)
=20,05x100
=2005
2,15 : 0,1 + 2,15 x 7 + 2,15 : 0,5 + 2,15
=2,15 x 10 + 2,15 x 7 + 2,15 x2 + 2,15 x 1
=2,15 x ( 10 + 7 + 2 + 1 )
= 2,15 x 20
= 43
OK CHÚC BẠN HỌC TỐT !!!
=2,15 x 10 + 2,15 x 7 + 2,15 x 2 + 2,15 x 1
=2,15 x (10+7+2+1)
=2,15 x 20 = 43
\(2,15\times123,06-2,15\times23,06+17,8\)
\(=2,15\times\left(123,06-23,06\right)+17,8\)
\(=2,15\times100+17,8\)
\(=215+17,8\)
\(=232,8\)
`2,15 xx 132,06 -2,15 xx 23,06 + 17,85`
`=2,15 xx(132,06 -23,06 )+ 17,85`
`=2,15 xx109+ 17,85`
`=234,35+ 17,85`
`=252,2`
20,05x14+40,1x16+60,15x18
=20,05x14+20,05x2x16+20,05x3x18
=20,05x14+20,05x32+20,05x54
=20,05x(14+32+54)
=20,05x100
=2005
20,05x14+40,1x16+60,15x18
=20,05x14+20,05x2x16+20,05x3x18
=20,05x14+20,05x32+20,05x54
=20,05x(14+32+54)
=20,05x100
=2005
4,3 * 6,5 + 2,15 * 37 + 2,15 * 27 - 2,15
= 2,15 * 13 + 2,15 * 37 + 2,15 * 27 - 2,15
= 2,15 * ( 13 + 37 + 27 - 1 )
= 2,15 * 76
= sai đề
\(\left(2x^2-3x+5\right)\left(x^2-8x-2\right)\)
\(=2x^4-16x^3-4x^2+24x^2-3x^3+6x+5x^2-40x-10\)
\(=2x^4-\left(16x^3+3x^3\right)-\left(4x^2-24x^2-5x^2\right)+\left(6x-40x\right)-10\)
\(=2x^4-19x^3+25x^2-34x-10\)
\(2,15+0,763:0,7\)
\(=2,15+1,09=3,24\)
b,\(8,64:\left(1,46+3,34\right)\)
\(=8,64:4,8=1,8\)
Học tốt
a ) 2,15 + 0,763 : 0,7
= 2,15 + 1,09
= 3,24
b ) 8,64 : ( 1,46 + 3,34 )
= 8,64 : 4,8
= 1,8
\(=\dfrac{\left(9-1\right)\left(9-2\right)\left(9-3\right)\cdot...\cdot\left(9-9\right)\cdot\left(9-10\right)}{1\cdot2\cdot3\cdot...\cdot10}\)
\(=\dfrac{0\cdot8\cdot7\cdot6\cdot...\cdot\left(-1\right)}{1\cdot2\cdot3\cdot...\cdot10}\)
=0
\(60,15-34x2,15\)
\(=2045,1x2,15\)
\(=4396,965\)
\(HT!\)
\(@Kaito\)\(Kid\)
TL
60,15 -34 X 2,15
=60,15 -73,1
=-12,95
HT
K CHO MIK