SOLUTION: hi, Which of the following is a factor of 8x^2 + 6xy - 9y^2 a) x -3y b) 2x - 3y c) 4x - 3y d) 8x - 3y

Algebra ->  Signed-numbers -> SOLUTION: hi, Which of the following is a factor of 8x^2 + 6xy - 9y^2 a) x -3y b) 2x - 3y c) 4x - 3y d) 8x - 3y      Log On


   

Question 904511: hi,
Which of the following is a factor of
8x^2 + 6xy - 9y^2
a) x -3y
b) 2x - 3y
c) 4x - 3y
d) 8x - 3y
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

first factor
8x%5E2+%2B+6xy+-+9y%5E2 .........write 6xy as 12xy-6xy

+8x%5E2%2B12xy-6xy-9y%5E2+ .........group

+%288x%5E2%2B12xy%29-%286xy%2B9y%5E2%29+

+4x%282x%2B3y%29-3y%282x%2B3y%29+

+%284x-3y%29%282x%2B3y%29+

so, your answer is: c) 4x+-+3y