Simple Factorization

5a^2+26ab+5b^2
= (5a+b)(a+5b)

2007-10-04 21:27:09 補充：
5a^2 26ab 5b^2 =5a^2 ab 5b^2 25ab=a(5a b) 5b(5a b)=(5a b)(a 5b)OR5a^2 26ab 5b^2 =5a^2 25ab 5b^2 ab=5a(a 5b) b(5b a)=(a 5b)(5a b)Hoping u know what i mean

2007-10-04 21:27:42 補充：
加號嚟ga

method 1

5a^2+26ab+5b^2
=5a^2+25ab+ab+5b^2
=5a(a+5b)+b(a+5b)
=(a+5b)(5a+b)



method 2

cross-method

5a^2+26ab+5b^2

a 5b
5a b
25ab+ab=26ab , where is equal to the middle term of (5a^2+26ab+5b^2)

so 5a^2+26ab+5b^2=(a+5b)(5a+b)