Question

25b в 3 степени−b ПОМОГИТЕ ПЖ!!
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Answer 1

$25b^{3}-b=0$
$b(25b^{2}-1)=0$
$b_{1}=0$
$25b^{2}-1=0$
$25b^{2}=1$
$b^{2}= frac{1}{25}$
$b_{2}= frac{1}{5}$
$b_{3}=- frac{1}{5}$