Thuc hien phep tinh:
(163 - 642) :8
Thuc hien phep tinh
10-[120:3-2(132-117);2]
163-126:{150:3-320:[250-(120+15.6)
nhanh 9 tick giup ik mk can gap
\(10-\left[120:3-2\left(132-117\right):2\right]\)
\(=10-\left[120:3-2.15:2\right]\)
\(=10-\left[40-30:2\right]\)
\(=10-\left[40-15\right]\)
\(=10-25\)
\(=-15\)
\(163-136:\left\{150:3-320:\left[250-\left(120+15.6\right)\right]\right\}\)
\(163-126:\left\{150:3-320:\left[250-\left(120+90\right)\right]\right\}\)
\(163-126:\left\{150:3-320:\left[250-210\right]\right\}\)
\(163-126:\left\{150:3-320:40\right\}\)
\(163-126:\left\{50-8\right\}\)
\(163-126:42\)
\(163-3\)
\(160\)
hok tốt
thuc hien phep tinh
(x+8)(x-2y)
(x+8).(x-2y)=\(=x^2-2xy+8x-16y\)
\(=x^2+8x-2xy-16y\)
thiếu đề hay sao ý
ko thuc hien phep tinh hay giai thich ket qua phep tinh dung hay sai
[2+4+6+8+...+102]:3=815
Thuc hien phep tinh : 2-4-6+8+10-12-14+16+...-2006+2008+2010-2012
=(2-4-6+8)+(10-12-14+16)+...+(2002-2004-2006+2008)+(2010-2012)
=0+0+...+0+(-2)
=-2
thuc hien cac phep tinh sau 1.2.3.....9-1.2.3.....8-1.2.3.....7.\(8^2\)
thuc hien phep tinh
a A=1.2.3....9-1.2.3....8-1.2.3...8.8
Thuc hien phep tinh
Đề bài là " Thực hiện phép tính " , thế phép tính nào ? Mk có thấy phép tính nào đâu !?
Thuc hien phep tinh sau:
( 163 - 642) :83
\(\left(16^3-64^2\right):8^3\)
\(\Leftrightarrow\left(4096-4096\right):512\)
\(\Leftrightarrow0.512\)
\(\Leftrightarrow0\)
Thuc hien phep tinh C +XXVIII