\( f(x)=-x^{2}+1 \) y \( g(x)=0,4 \)

2 - Qual é o valor de \( x \) \( \begin{array}{ll}\text { a) } 2^{x}=32 & \text { b) } 5^{a}=25\end{array} \)

10. a. Show that the roots of the equation \( 2\left(a^{2}+b^{2}\right) x^{2}+2(a+b) x+1=0 \) can never be real unless \( a=b \). b. Prove that the roots of the equation \( x^{2}+(2 k-1) x+k^{2}=0 \) are real roots if \( k \leq \frac{1}{4} \).

Determina la función usan \( f(x)=\frac{7 x-3}{2} \) - Resuelue la

\( a^{2}=4 a+4 \) \( b^{2}=4 b+4 \) olduğuna göre, \( \frac{a-4}{a^{2}}+\frac{4}{b^{2}} \) kaçtır?

e. Qual i o valor de \( x \) \( \begin{array}{ll}\text { a) } 2^{x}=32 & \text { b) } 5^{x}=25\end{array} \)