y:0.04+y*3/2-y*6.5=2014
Tìm y biết: y:0.04+y*3/2-y*6.5=2014
y : 0.04 + y x 3/2 - y x 6.5 = 2014
tìm y
y:0,04 + y x 3/2-y x 6,5 = 2014
y x 25 + y x 1,5 -y x 6,5=2014
y(25+1,5-6,5) =2014
20 x y=2014
Vậy y = 2014/20= 100,7
Y :0.04+y*1.5-y*6.5=2014
TÌM y
Ta có:y:0,04+y*1,5-y*6,5=2014
y*25+y*1,5-y*6,5=2014
y*(25+1,5-6,5)=2014
y*20=2014
y=2014:20
y=100,7
Phân tích các đa thức sau thành nhân tử:
\(x^6+y^6\)
\(0.04-9x^2\)
\(32x^2-2\left(y-1\right)^2\)
\(x^6+y^6=\left(x^2\right)^3+\left(y^2\right)^3=\left(x^2+y^2\right).\left(x^4-x^2y^2+y^4\right)\\ ---\\ 0,04-9x^2=\left(0,2\right)^2-\left(3x\right)^2=\left(0,2-3x\right)\left(0,2+3x\right)\\ ---\\ 32x^2-2\left(y-1\right)^2=2\left[16x^2-\left(y-1\right)^2\right]=2\left[\left(4x\right)^2-\left(y-1\right)^2\right]\\ =2\left(4x-y+1\right)\left(4x+y-1\right)\)
E=(1/1/2.xy^2)(1/1/3.x^2.y^3)(1/1/4.x^3.y^4).....(1/1/2014.x^2013.y^2014)
y/0,04+y*3/2 -y*6,5=2014
y:0,04+y*3/2-y*6,5=2014
y:0,04+y*3/2-y*6,5 =2014
Y+0,04+Y×3/2-Y×6,5=2014