35 > 34 đúng không ạ
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a) 35 x 34 + 35 x 86 + 65 x 75 + 65 x 45
= 35 x ( 34 + 86 ) + 65 x ( 75 + 45 )
= 35 x 120 + 65 x 120
= 120 x ( 35 + 65 )
= 120 x 100
= 12 000
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34 x 34 > 35 x 33
107 x 108 > 106 x 109
Nhớ click cho mik nha !!!!!!!!!!!!!!!!
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viết lại câu sao cho nghĩa không đổi
33, We should brush our teeth carefully after meals
==> Our teeth should be brushed carefully after meals
34, What a pity i live far from my school
==> I wish I didn't live far from my school
35, We started learning English four years ago
==> We have learnt English for four years
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a) 35 x 34 + 35 x 38 + 65 x 75 + 65 x 45
= 35 x (34+38) + 65 x (75 + 45)
= 35 x 72 + 65 x 120
= 2520 + 7800 = 10320
b) 3 x 25 x 8 + 4 x 37 x 6 + 2 x 38 x 12
= 3 x ( 25 x 8) + 4 x (37 x 6) + 2 x (38 x 12)
= 3 x 200 + 4 x 222 + 2 x 456
= 600 + 888 + 912 = 2400
tk nha
35 x 34 + 35 x 38 + 65 x 75 + 65 x 45
= 35 x ( 34 + 38 ) + 65 x ( 45 + 75 )
= 35 x 72 + 65 x 120
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\(35\cdot34+35\cdot86+65\cdot75+65\cdot45\)
\(=35\left(34+86\right)+65\left(75+45\right)\)
\(=35\cdot120+65\cdot120\)
\(=120\left(35+65\right)\)
\(=120\cdot100\)
\(=12000\)
35.34+35.86+65.75+65.45=1190+3010+4875+2925
=4200+7800
=12000
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