factorize: 25x^3-10xy^2+xy^2

 
 
:)

What is the distance between P(-3, -2) and Q(5, -2)?

the points are on a horizontal line so d=5-(-3)=8 

:)

What is the distance between points P(2, 7) and Q(10, 13)?

 

 

 
d=10 

During the 1998-1999 Little League season, the Tigers played 48 games. They won 28 more games than they lost. How many games did they win that season?

w+l=48
w-l=28 



2w=72 
w=32 

:)

-7x+y=-19 -2x+3y=-19

m3: -7x+y=-19
-2x+3y=-19 
-21x+3y=-57
-2x+3y=-19 

subtracting the equations... 

-2x+21x+3y-3y=-19+57 
19x=38 
x=2 
which leads us to y=5 

:) 

find the area triangle of sides 5cm,6cm,7cm

where the semiperimeter is

 

a=5, b=6, c=7, s=18/2=9 

by substitution and simplification we get 
 


:)

Solve log3 3x - log3 (x-4) = 2

 

 

 

 


 

x=6