Posted by Kayleigh on Sunday, January 4, 2009 at 4:46pm.
i'm having troubles with some sums
how would you factorize completely
9a(squared)  b(squared)?
or an expression like
27x(squared)  1/3y(squared)
its difficult. have many more.

Math Algebra  jess, Sunday, January 4, 2009 at 4:56pm
9a^2  b^2
= (3a)^2 (b)^2
= (3a+b)(3ab)
i couldn't understand the second one though. Hope it helps!!! :)

Math Algebra  Damon, Sunday, January 4, 2009 at 4:56pm
whenever you have the difference of two squares
the factors are the sum and the difference of the two that are squared.
a^2b^2 ( a + b )( a  b )

Math Algebra  Damon, Sunday, January 4, 2009 at 5:00pm
27x(squared)  1/3y(squared)
first take (1/3) out
(1/3) (3^4 x^2  y^2)
(1/3)(3^2 + y)(3^2  y)
(1/3)(9+y)(9y)

forgot x  Damon, Sunday, January 4, 2009 at 5:02pm
1/3) (3^4 x^2  y^2)
(1/3)(3^2 x + y)(3^2  y)
(1/3)(9x+y)(9xy)
Answer This Question
Related Questions
 math  i am having a minor difficulty i've been stuck for over an hour and don't...
 10th Grade Algebra  Please help me with these factorise algebra questions!!! 1...
 algebra 2 multiple choice HELP  find f(a), if f(t) = 2t2(squared)t2 A. 2(a+t)...
 math  How do i find the area of a triangle? For example: A squared + b squared...
 Math  Find the shortcut. Solve these problems. Then find and explain a shortcut...
 MATH  My Math work instructions is place the numbers from least to greatest. 7 ...
 Math  My Math work instructions is place the numbers from least to greatest. 7 ...
 College Algebra  Can someone check my answer please! I'm not sure this is right...
 algerbra  i have to simply the expression 3x squared10+4x+8x squared, so far ...
 Math  I need help with this problem. In decimal form, write the ratio of the ...
More Related Questions