math
posted by Lena .
when is partial factoring used?

math 
bobpursley
When no other method helps you break up a complex polynomial?

math 
Lena
We are learning about parabolas and the question was using partial facotring to find 2 points that lie on the parabola. How would I do that?
Ex. y=x^212x+23 
math 
becca
In mrs.Quimby's Class, everyone plays on a team. There are five more soccer players than baseball players. There are three more students on the track team than on the baseball team.There are two more football players than hockey players. There are three more students on the track team than the football team. Then number of baseball and football players equals 8. How many players are on each team? how many students are there in the class?

math 
bobpursley
x^2 + 12x + ? what is the ? to make a perfect square. Answer, half of 12, squared, or six squared, or ...
x^2+12x+36 makes a perfect square.
y= x^2+12x + 36 +23 36 Notice we added 36 and subtracted 36 to keep it equal to y.
y= (x+6)^2  13
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