Question

[Kaijo]

1,Thực hiện phép tính

a,\(\frac{3}{2x^2+2x}+\frac{2x-1}{x^2-1}-\frac{2}{x}\) 

b,\(\frac{3x}{5x+5y}-\frac{x}{10x-10y}\) 

c,\(\frac{5x^2-y^2}{xy}-\frac{3x-2y}{y}\)

d,\(\frac{3}{2x+6}-\frac{x-6}{2x^2+6x}\)

Answer 1

[๖²⁴ʱTú❄⁀ᶦᵈᵒᶫ]

\(\frac{3x}{5x+5y}-\frac{x}{10x-10y}\)

\(=\frac{3x}{5\left(x+y\right)}-\frac{x}{10\left(x+y\right)}\)

\(=\frac{30x\left(x-y\right)-5x\left(x+y\right)}{5\left(x+y\right).10\left(x+y\right)}\)

\(=\frac{5x\left(5x-7y\right)}{50\left(x+y\right)\left(x-y\right)}\)

\(=\frac{x\left(5x-7y\right)}{\left(x+y\right)\left(x-y\right)}\)

Answer 2

[๖²⁴ʱTú❄⁀ᶦᵈᵒᶫ]

chỗ cuối tớ sai 

\(=\frac{x\left(5x-7y\right)}{10\left(x+y\right)\left(x-y\right)}\)

đây nha , e xin lỗi