Bentuk rasional dari \( \frac{\sqrt{21}}{\sqrt{7}} \) adalah ... Nilai dari \( \sqrt{5}+\sqrt{20}+\sqrt{45}+\sqrt{80} \) adalah ... Bentuk rasional dari \( \frac{12}{3-\sqrt{5}} \) adalah ... Bentuk rasional dari \( \frac{3+\sqrt{5}}{5-\sqrt{5}} \) adalah ...

- Quadratic Formula Write the equation in standard form. Then solve by the quadratic formul \( 2 x^{2}-6 x+7=0 \)

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:

Write the equation in standard form. \[ x(x+8)=-43 \]

2. \( (x-4)=18 x=13 \)

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