Lesson 4 To Be Determined Develop Understanding

Ready

Rewrite as multiples of $\sqrt{2}$ .

1.

$\sqrt{8}$

2.

$\sqrt{18}$

3.

$\sqrt{32}$

Rewrite as multiples of $\sqrt{5}$ .

4.

$\sqrt{20}$

5.

$\sqrt{45}$

6.

$\sqrt{80}$

7.

Explain how rewriting radical expressions makes it possible to add or subtract them.

Set

Identify the number set to which the roots of each quadratic function belong.

8.

A.

whole numbers $(W)$

B.

integers $(Z)$

C.

rational numbers $(Q)$

D.

irrational numbers $(\overset{―}{Q})$

E.

none of the above

9.

A.

whole numbers $(W)$

B.

integers $(Z)$

C.

rational numbers $(Q)$

D.

irrational numbers $(\overset{―}{Q})$

E.

none of the above

10.

$f (x) = x^{2} + 4 x - 24$

A.

whole numbers $(W)$

B.

integers $(Z)$

C.

rational numbers $(Q)$

D.

irrational numbers $(\overset{―}{Q})$

E.

none of the above

11.

$g (x) = (2 x - 1) (5 x + 2)$

A.

whole numbers $(W)$

B.

integers $(Z)$

C.

rational numbers $(Q)$

D.

irrational numbers $(\overset{―}{Q})$

E.

none of the above

12.

$f (x) = 2 x^{2} + 3 x - 5$

A.

whole numbers $(W)$

B.

integers $(Z)$

C.

rational numbers $(Q)$

D.

irrational numbers $(\overset{―}{Q})$

E.

none of the above

13.

A.

whole numbers $(W)$

B.

integers $(Z)$

C.

rational numbers $(Q)$

D.

irrational numbers $(\overset{―}{Q})$

E.

none of the above

14.

$r (t) = t^{2} - 8 t + 16$

A.

whole numbers $(W)$

B.

integers $(Z)$

C.

rational numbers $(Q)$

D.

irrational numbers $(\overset{―}{Q})$

E.

none of the above

15.

$h (x) = 3 x^{2} - 5 x + 9$

A.

whole numbers $(W)$

B.

integers $(Z)$

C.

rational numbers $(Q)$

D.

irrational numbers $(\overset{―}{Q})$

E.

none of the above

Go

Find the $x$ -intercepts for each of the quadratic equations.

16.

$x^{2} + 4 x - 21 = 0$

17.

$5 x^{2} + 16 x + 3 = 0$

18.

$x^{2} - 4 x + 1 = 0$

19.

$x^{2} - 16 x + 4 = 0$

20.

$x^{2} + 3 x - 40 = 0$

21.

$2 x^{2} - 3 x - 9 = 0$

22.

$x^{2} - 3 x = 0$

23.

$x^{2} + 6 x + 8 = 0$

24.

$3 x^{2} - 11 = 0$