Quadratic Formula & Simplifying Radicals (NTI22)

Simplify the following radical: √32

• 3√2
• 4√8
• 16√2
• 4√2

Tags

CCSS.HSN.RN.A.2

√45

• 3√5
• 5√3
• 9√5
• 5√9

Tags

CCSS.HSN.RN.A.2

√72

• 8√9

• 2√6

• 6√2

• 36√2

Which of these is the correct quadratic formula?

• $x=\frac{b\pm\sqrt{b^2-4ac}}{2a}$

• $x=\frac{-b\pm\sqrt{b-4ac}}{2a}$

• $x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

• $x=\frac{-b\pm\sqrt{b^2-4ac}}{2}$

In the equation y = x² +5x +7,

match each coefficient with its correct letter.

• a=0, b=5, c=7

• a=1, b=5, c=7

• a=7, b=5, c=1

Solve using the quadratic formula:  $2m^2-7m-3=0$  

•  $\frac{7+\sqrt{73}}{4},\frac{7-\sqrt{73}}{4}$  

•  $\frac{-7+\sqrt{73}}{4},\frac{-7-\sqrt{73}}{4}$  

•  $\frac{7+\sqrt{25}}{4},\frac{7-\sqrt{25}}{4}$  

•  $\frac{-7+\sqrt{25}}{4},\frac{-7-\sqrt{25}}{4}$  

Find the zeros using the quadratic formula:  $9n^2-7n-4=0$  

•  $\frac{7+\sqrt{95}}{9},\frac{7-\sqrt{95}}{9}$  

•  $\frac{7+\sqrt{95}}{18},\frac{7-\sqrt{95}}{18}$  

•  $\frac{7+\sqrt{193}}{9},\frac{7-\sqrt{193}}{9}$  

•  $\frac{7+\sqrt{193}}{18},\frac{7-\sqrt{193}}{18}$  

• A.

• B.

• C.

• D.

Solve using the quadratic formula: $2n^2+5n-9=0$  

•  $\frac{-5+\sqrt{97}}{4},\frac{-5-\sqrt{97}}{4}$  

•  $\frac{5+\sqrt{97}}{4},\frac{5-\sqrt{97}}{4}$  

•  $\frac{-5+\sqrt{47}}{4},\frac{-5-\sqrt{47}}{4}$  

•  $\frac{5+\sqrt{47}}{4},\frac{5-\sqrt{47}}{4}$  

• A.

• B.

• C.

• D.