Объяснение:
[tex] \sqrt{9 {a}^{2} b} = 3 |a| \sqrt{b} = - 3a \sqrt{b} [/tex]
a≤0
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Объяснение:
[tex] \sqrt{9 {a}^{2} b} = 3 |a| \sqrt{b} = - 3a \sqrt{b} [/tex]
a≤0