SOLUTION: please help me factor the following 1) 5x^2y^6z^4-15x^4y^5z^3+20x^3y^5z^2 2) 12xy+20yz-40wy 3) 16x^2-49 i would appreciate some help i am tatally lost

Algebra ->  Inequalities -> SOLUTION: please help me factor the following 1) 5x^2y^6z^4-15x^4y^5z^3+20x^3y^5z^2 2) 12xy+20yz-40wy 3) 16x^2-49 i would appreciate some help i am tatally lost      Log On


   

Question 166190: please help me factor the following
1) 5x^2y^6z^4-15x^4y^5z^3+20x^3y^5z^2
2) 12xy+20yz-40wy
3) 16x^2-49
i would appreciate some help i am tatally lost
Answer by vleith(2983) About Me  (Show Source):
You can put this solution on YOUR website!
+5x%5E2y%5E6z%5E4-15x%5E4y%5E5z%5E3%2B20x%5E3y%5E5z%5E2
look for the greatest common factors in each term and then use distribution to "pull them out"
+5x%5E2y%5E5z%5E2+%28yz%5E2+-3x%5E2z+%2B4x%29+
Same idea for problem 2
12xy%2B20yz-40wy
4y%2A%283x+%2B+5z+-+10w%29
For number 3, use difference of two squares
16x%5E2-49
%284x+-+7%29%284x%2B7%29