i need study buddy... Is there anyone

Question

hartnn · Answer

there are many here who can help you with your studies ^_^
just post the questions in which you have trouble with here, one by one

yacoub1993 · Answer

ok frist question
Evaluate the radical expressions or indicate that the root is not a real number.
$$3\sqrt{(-4)^{3}}$$

A. -64	

B. 4	

C. -4	

D. not a real number

hartnn · Answer

the quantity under the radical sign will be positive or negative ?

hartnn · Answer

(-4)^3 is positive or negative ?

yacoub1993 · Answer

don't know what u mean

hartnn · Answer

(-4)^3 = (-4)*(-4)*(-4) = ... ?

yacoub1993 · Answer

-64

hartnn · Answer

yes, that is negative, right ?

yacoub1993 · Answer

yes

hartnn · Answer

and when quantity under root sign is negative, its not a real number!

hartnn · Answer

like $\sqrt {-1}= i \ or \ \sqrt {-64}=8i$
are imaginary numbers, not real

hartnn · Answer

got this ?

yacoub1993 · Answer

yes i get it so the answer is D. not a real number

hartnn · Answer

correct :)

yacoub1993 · Answer

Simplify using properties of exponents.

$$\frac{ 16x \frac{ 2 }{3 } }{ 4x \frac{ 1 }{ 4 } }$$


A.  4x5/12	

B.  4x1/12	

C.  4x5/3	

D.  12x1/12

hartnn · Answer

can you ask new questions in new post,please ?
so that if i am not able to help, others will surely help you.
sorry, i gtg

yacoub1993 · Answer

ok