\( 2 X_{2}-4 X+4 \) from the sum of \( 4 X_{2}+2 X+7 \) and \( X_{2}+6 X+2 \)

19. On the set of axes below, draw the graph of the equation \( y=-\frac{3}{4} x+3 \).

Mathematics If \( x \) varies inversely as the seware \( y \), ohen \( x=27, y=9 \) find the equation connecting \( x \) and \( y \) find \( x \) colen \( y=10 \)

Solve for x in the equation: \( \sqrt{2x - 5} + 3 = x \). Are there any extraneous solutions?

81 If the equation \( x^{2}-6 x+9=\mathrm{b} \) has two real distinct roots, then \( \mathrm{b} \in \ldots \ldots . . . \). . \( \begin{array}{llll}\text { (a) } R & \text { (b) }]-\infty, 0] & \text { (c) }]-\infty, 0[ & \text { (d) }] 0, \infty[ \end{array} \)

\[ (a+b)^{2 n} \] ifadesinin a nin azalan kuvvetlerine göre açlımın- da baştan 5. ve 7. terimlerin katsayılan birbirine eşit ise \( n \) kaçtı?