SOLUTION: please help me i need your help .Thanks in advance .It has do be factor completely . 1) x^2+17x+16 2) 3x^2-75y^2

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: please help me i need your help .Thanks in advance .It has do be factor completely . 1) x^2+17x+16 2) 3x^2-75y^2      Log On


   

Question 76544: please help me i need your help .Thanks in advance .It has do be factor completely .
1) x^2+17x+16
2) 3x^2-75y^2
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
Factor completely:
1)
x%5E2%2B17x%2B16+=+%28x%2B1%29%28x%2B16%29
2)
3x%5E2-75y%5E2 First, factor a 3.
3%28x%5E2-25y%5E2%29 Now, can you see that the parentheses contain the difference of two squares?:%28x%29%5E2-%285y%29%5E2.
The difference of two squares can be factored thus:
A%5E2-B%5E2+=+%28A%2BB%29%28A-B%29 Applying this to your problem, you will get:
3x%5E2-75y%5E2+=+3%28x%2B5y%29%28x-5y%29...and there it is!