Determina per quare valore di a la funzlone \( y=\frac{x}{a-x} \) ha dominio \( D: x \neq-2 \). \( P(2 ; 5) \). \[ [a=8, b=2 \mid \]

Factor. \[ h^{2}-6 h+5 \]

\( a \)-nin hanss qiymatində \( a x+10=-10 \) xatti tanliyinin halli yoxdur? \( \begin{array}{llll}\text { A) } 20 & \text { B) } 10 & \text { C) } 0 \text { D) }-10 & \text { E) }-20\end{array} \)

7. Prove that \( (\sqrt{3}+1)(\sqrt{3}-1)=2 \) using this, i) Find \( \frac{2}{1+\sqrt{3}} \). ii) Find \( \frac{2}{\sqrt{3}-1} \). iii) Prove that \( \frac{1}{1+\sqrt{3}}+\frac{1}{\sqrt{3}-1}=\sqrt{3} \).

\( x \)-тің, қандай мәндерінде \( x^{2}+1,8 x-0,6= \) \( m \) теңдеуі \( m=\mathbf{3} \) мәнін қабылдайды?

1) \( x^{2}+3(y+z) x+(y+2 z)(2 y+z) \)