•  Expand (2a + b)²:
(2a + b)²
= (2a + b) · (2a + b)
Multiply out the brackets by applying the distributive property of multiplication:
= (2a + b) · 2a + (2a + b) · b
= 2a · 2a + b · 2a + 2a · b + b · b
= 2²a² + 2ab + 2ab + b²
Now, group like terms together, and you get
= 2²a² + 4ab + b²
= 4a² + 4ab + b²    <———    expanded form  (this is the answer).
I hope this helps. =)
Tags:  <em>special product square of a sum algebra</em>
        
             
        
        
        
We have that
<span>p(t)=-3t^2+18t-4
using a graphing tool, we can see the maximum of the graph
(see the attached figure)
A) </span><span>In what year of operation does Mr. Cash’s business show maximum profit?
</span>
Mr. Cash’s business show maximum profit at year 3 (maximum in the parabole)
<span>B) What is the maximum profit? 
23 (hundred of thousand of dollars) = 2.300.000 dollars
</span>c) What time will it be two late? 
(This is the time when the graph crosses zero and the profits turn into losses )
5.77 years, or an estimate of about  69 months.
 
        
        
        
Answer:25 m
Step-by-step explanation:
 
        
             
        
        
        
Step-by-step explanation:
In simplest radical form
= √-3
= -3^(1/2)
or
= √-3
= √3i
i is imaginary number, you can write it if you find a negative number in a square root
 
        
             
        
        
        
The question is: If the student is known to be the girl (300 girls) what is the probability of being right handed.
We know that there are 300 girls, and that out of those 300, there are 250 girls right handed. 
Divide 250 with 300
250/300 = 0.83333, or 83.33%
0.83333, or 83.33% is your answer
hope this helps