помогите) срочно надо)

√ 180 = 6 √ 5 
3/7 √ 147 = √ 9/49 * 147 = √ 27 = 3 √ 3 
√ ( 5A^5 / 49 ) ; A ≤ 0 ; 
√ ( 5A^5 / 49 ) = 1/7 √ 5A^5 =  1/7A^2  √ 5A
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3 √ 7 = √ 63
1/4 √ 48A = √ 3A
A^5 √ 6 ( A ≤ 0 ) 
A^5 √ 6 = √ ( 6A^25 )
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6/5 √ 2 = √ 36/25 * 2 = √ 72/25 = 1/5 √ 72 
2 √ 19/25 = √ 76/25 = 1/5 √ 76 
√ 72 < √ 76 
6/5 √ 2 < 2 √ 19/25