Factorization factor (a + b) square - 6A square + 6B square + 9 times (a-b) square | Math enthusiast | Mathematical art

Factorization factor (a + b) square - 6A square + 6B square + 9 times (a-b) square

Wrong thing to do

1 / 9-A, a / A-6A + 9, B / A + 6A + 9

1/(9-a)²=1/[(3+a)(3-a)]
a/(a²-6a+9)=a/(a-3)²
b/(a²+6a+9)=b/(a+3)²

(x+___ ）The second power of a = the second power of a - 6A + 9

Little brother, some questions seem to have some problems. X should be replaced by A. in this way, you should fill in - 3 on the horizontal line

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