A = 2010 × 2011 - 1945 / 2010 × 2010 + 65
A = 2010 × 2010 + ( 2010 - 1945) / 2010 × 2010 + 65
A = 2010 × 2010 + 65 / 2010 × 2010 + 65
A = 1
B = 2001 × 2001 + 111 / 2001 × 2002 - 1890
B = 2001 × 2001 + 111 / 2001 × 2001 + ( 2001 - 1890)
B = 2001 × 2001 + 111 / 2001 × 2001 + 111
B = 1
=> A = B
Bài làm :
Ta có :
\(+A=\frac{2010\times2011-1945}{2010\times2010+65}\)
\(A=\frac{2010\times2010+2010-1945}{2010\times2010+65}\)
\(A=\frac{2010\times2010+\left(2010-1945\right)}{2010\times2010+65}\)
\(A=\frac{2010\times2010+65}{2010\times2010+65}\)
\(A=1\)
\(+B=\frac{2001\times2001+111}{2001\times2002-1890}\)
\(B=\frac{2001\times2001+111}{2001\times2001+2001-1890}\)
\(B=\frac{2001\times2001+111}{2001\times2001+\left(2001-1890\right)}\)
\(B=\frac{2001\times2001+111}{2001\times2001+111}\)
\(B=1\)
Vậy A=B=1.
Chúc bạn học tốt !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
\(A=\frac{2010\times2011-1945}{2010\times2010+65}\)
\(=\frac{2010\times2010+2010-1945}{2010\times2010+65}\)
\(=\frac{2010\times2010+65}{2010\times2010+65}\)
\(=1\)
\(\Rightarrow A=1\)
\(B=\frac{2001\times2001+111}{2001\times2002-1890}\)
\(=\frac{2001\times2001+111}{2001\times2001+2001-1890}\)
\(=\frac{2001\times2001+111}{2001\times2001+111}\)
\(=1\)
\(\Rightarrow B=1\)
Vậy A = B = 1
Chúc bạn học tốt
A.2010x(2010+1)-1945/2010x2010+65
2010x2010+2010x1-1945/2010x2010+65
2010×2010+2010-1945/2010x2010+65
2010×2010+65/2010×2010+65
1