Find the product of following: \( \begin{array}{ll}\text { (a) }\left(x^{3}-4 x+8\right)(3 x+4) & \text { (b) }\left(-x^{2}-3 x+9\right)(-4 x-7) \\ \text { (c) }\left(9 x^{2}-x+15\right)\left(x^{3}-5\right) & \text { (d) }\left(x^{2}-2 x y-y^{2}\right)(x+y)\end{array} \)

Compute the value of the discriminant and give the number of real solutions of the quadratic equation, \( 3 x^{2}-7 x+2=0 \) Discriminant: Number of real solutions:

Quadratic Formula Write the equation in standard form. Then solve by the quadratic formula. \( \left.\qquad \begin{array}{l}\text { Question } 9.2 \\ \text { Part } 2 \text { of } 2\end{array}\right)=-48 \)

\( f f ( x ) = x ^ { 2 } + \frac { 6 } { x } + 8 \sqrt { x } + 2 \)

2. \( (x-4)=18 x= \)

Solve for \( x \) by using the quadratic formula. \( 0.107 x^{2}+0.032 x-0.482=0 \)