Question

помогите сократить дробь: a^2-6ab+9b^2\3b-a

Answer 1

(a-3b)²/-(a-3b)= -(a-3b)=-a+3b
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Answer 2

$\frac{ a^{2} -6ab+9 b^{2} }{3b-a}= \frac{9b ^{2}-6ab+9 b^{2} }{3b-a}= \frac{(3b-a) ^{2} }{3b-a} =3b-a$