X & # 178; - 3ax + (2a + b) (a-b) = 0, how to simplify? | Math enthusiast | Mathematical art

X & # 178; - 3ax + (2a + b) (a-b) = 0, how to simplify?

[x-(2a+b)][x-(a-b)]=0
∴x=2a+b x=a-b

Decomposition factor: 3A & # 178; - 21; 5 (X-Y) &# 178; + 15 (X-Y) &# 179

3a²-21
=3（a²-7）
5（x-y）²+15（x-y）³.
=5(x-y)²（1+3x-3y）
If you don't understand this question, you can ask,

A & # 178; (x-2a) &# 178; - A (2a-x) &# 178; please use the factorization

Original formula = a ^ 2 (x-2a) ^ 2 - A (x-2a) ^ 2
= a ( a -1 ) (x-2a ) ^2

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