Hướng dẫn cách giải: Dặt ẩn phụ
x-2020=y
2009-x=-(y+1)
Phần còn lại bn tự lm nha
Các câu hỏi tương tự
tìm x biết :
(2009 - x^2) + ( 2009 - x^2)( x - 2010) + ( x - 2010) / (2009 - x^2) - ( 2009 - x^2)( x - 2010) + ( x - 2010 ) = 19/49
Tìm x biết: (2009-x)2 + (2009-x)(x-2010) + (x-2010)2/(2009-x)2 - (2009-x)(x-2010) + (x-2010)2 = 19/49
Tìm x biết: (2009-x)2 + (2009-x)(x-2010) + (x-2010)2/(2009-x)2 - (2009-x)(x-2010) + (x-2010)2 = 19/49
Tìm x : (2009-x)2+(2009-x)(x-2010)+(x-2010)2/(2009-x)2-(2009-x)(x-2010)+(x-2010)2=19/49
TÌM X
{[2009-x]^2+[2009-x][x-2010]+[x-2010]^2}/{[2009-x]^2-[2009-x][x-2010]+[x-2010]^2}=19/49
tim x
(2009-x)^2+(2009-x)×(x-2010)+(x-2010)^2/(2009)^2-(2009-x)×(x-2010)+(x-2010)^2=19/49
(2009-x)2+(2009-x)(2010-x)+(2010-x)2/(2009-x)2+(2009-x)(2010-x)+(2010-x)2 = 19/49
tìm x
tìm x biết \(\frac{\left(2009-x\right)^2+\left(2009-x\right)\left(x-2010\right)+\left(x-2010\right)^2}{\left(2009-x\right)^2-\left(2009-x\right)\left(x-2010\right)+\left(x-2010\right)^2}=\frac{19}{49}\)
Tìm x biết:
\(\frac{\left(2009-x\right)^2+\left(2009-x\right)\left(x-2010\right)+\left(x-2010\right)^2}{\left(2009-x\right)^2-\left(2009-x\right)\left(x-2010\right)+\left(x-2010\right)^2}=\frac{19}{49}\)
(2009-x)2+(2009-x)(x-2010)+(x-2010)2/(2009-x)2-(2009-x)(x-2010)+(x-2010)2=19/49
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