We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website. cookie policy and privacy policy.
 
+0  
 
+1
50
3
avatar+307 

Question 1. Simplify the following: what is the cube root of 256

 

Question 2. Rationalize the denominator: square root of 10/5

 

Question 3. Find the discriminant of the following: -4x+1+4x^2

 

Question 4. Find the discriminant of the following: 1+3x^2-11x

 Apr 25, 2019
 #1
avatar+100549 
+1

1.  ∛256  =  ∛[ 64 * 4 ]  = ∛64 * ∛4   = 4∛4

 

2.   √ [10 / 5 ]   =  √10 / √5  =   √10 * √5  /  [ √5 * √5 ]  =  √50 / 5   

 

3.  Rewrite as   4x^2 - 4x + 1   .....in the form  ax^2 + bx + c.....the discriminant = b^2 - 4ac....so

      (-4)^2 - 4(4)(1)  =   16 - 16  = 0

 

4.  Rewrite as   3x^2 -11x + 1......discriminant  =   (-1)^2 - 4(3)(1)  =  121 - 12  = 109

 

 

 

cool cool cool

 Apr 25, 2019
 #2
avatar+307 
+2

Thank you so much CPhill.

Nerd123  Apr 25, 2019
 #3
avatar+100549 
+1

OK...

 

cool cool cool

CPhill  Apr 26, 2019

21 Online Users

avatar
avatar
avatar
avatar