SOLUTION: (x + 3y) (x - 3y)
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Question 765094: (x + 3y) (x - 3y)
Answer by lenny460(1073) (Show Source): You can put this solution on YOUR website!
(x + 3y) (x - 3y)
x * x = x^2
x * -3y = -3xy
3y * x = 3xy
3y * -3y = -9y^2
Therefore:
x^2 - 3xy + 3xy - 9y^2
Combine like terms:
-3xy + 3xy = 0
Answer:
x^2 - 9y^2
Lennox Obuong
Algebra Tutor
Nairobi, Kenya
Email: lennoxobuong@yahoo.com
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