How do you factor the polynomial x2-18x+45

Question

anonymous · Answer

x2   -  18x   +   45
         multiply
       /           \
    V               V
( x    -    3 )  ( x  -  15   )





x2  - 18x   +  45
                    multiply    
                    /           \
                  V              V
          ( x - 3 )   ( x  - 15 )
                ^                  ^ 
                   \             /
                       add
        x2     -     18x    +         45



 ( x - 3 ) ( x  - 15 ) 

this is in its factored form

if you were to solve it

 ( x - 3 ) ( x  - 15 ) = 0

( x - 3 )  = 0
( x  - 15 ) = 0

x = { 3, 15}

both forms of the answer should be correct in value

x = 3
x = 15