SOLUTION: factor completely. if polynomial is prime state this {{{ 9x^2 - 27xy - 36y^2}}} could someone please help me I am really confused thanks

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: factor completely. if polynomial is prime state this {{{ 9x^2 - 27xy - 36y^2}}} could someone please help me I am really confused thanks      Log On


   

Question 332113: factor completely. if polynomial is prime state this

+9x%5E2+-+27xy+-+36y%5E2

could someone please help me I am really confused
thanks
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
factor completely. if polynomial is prime state this
:
9x%5E2+-+27xy+-+36y%5E2
recognize that 9 is a factor of all three coefficients, we have
9%28x%5E2+-+3xy+-+4y%5E2%29
and this easily factors to
9(x-4y)(x+1y)