Bạn ghi đề như vậy thì không ai hiểu đâu
Bạn ghi đề như vậy thì không ai hiểu đâu
Giaỉ PT
\(\frac{x^2+4x+6}{x+2}+\frac{x^2+16x+72}{x+8}=\frac{x^2+8x+20}{x+4}\) \(+\frac{x^2+12x+20}{x+4}\)
\(\frac{x+5}{x-5}-\frac{x-5}{x+5}=\frac{20}{x^2-25}\)
Giải PT:
20(\(\dfrac{x-2}{x+1}\))2 - 5(\(\dfrac{x+2}{x-1}\))2 + 48\(\dfrac{x^2-4}{x^2-1}\) = 0
23) \(\dfrac{1}{x^2+4x+3}+\dfrac{1}{x^2+8x+15}+\dfrac{1}{x^2+12x+35}=\dfrac{1}{9}\)
24) \(\dfrac{1}{x^2+5x+6}+\dfrac{1}{x^2+7x+12}+\dfrac{1}{x^2+9x+20}+\dfrac{1}{x^2+11x+30}=\dfrac{1}{8}\)
25) \(\dfrac{x^2+2x+2}{x+1}+\dfrac{x^2+8x+20}{x+4}=\dfrac{x^2+4x+6}{x+2}+\dfrac{x^2+6x+12}{x+3}\)
Giải pt
\(\dfrac{x^2+2x}{x+1}+\dfrac{x^2+8x+20}{x+4}=\dfrac{x^2+4x+6}{x+2}+\dfrac{x^2+6x+12}{x+3}\)
\(\dfrac{1}{x^2+7x+12}\) + \(\dfrac{1}{x^2+9x+20}\) + \(\dfrac{1}{x^2+11x+30}\)=\(\dfrac{1}{18}\)
1, 7x - 4 = 3x + 20 2, 2x - 5^2 - x + 2^2 = 0 3, 2/x+1 + 1 = 7/x+1
Giải Pt \(\dfrac{14}{20-6x-2x^2}+\dfrac{x^2+4x}{x^2+5x}-\dfrac{x+3}{2-x}+3=0\)
Giải phương trình :(1/x^2+3x+2)+(1/x^2+5x+6)+(1/x^2+7x+12)+(1/x^2+9x+20)+1(/x^2+11x+30)+(1/x^2+13x+41)=1/2