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matsurmamedov
@matsurmamedov
June 2021
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ПОМОГИТЕ РЕШИТЬ!!! ОЧЕНЬ ПРОШУ!
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oganesbagoyan
Verified answer
а)
(7√2 -3√3)(7√2 +3√3) =(7√2)² -(3√3)² =98 -27 =
71.
б)
√49*√0,09 +√(2³+1) = 7*0,3 +3
=5,1.
в)
18(-1/3*√5)² -1/6(4√3)² =18*5/9 -1/6*16*3 =10 -8 =
2.
г)
(12-√7)(3+2√7) = 12*3 +12*2√7 -3√7 -2*(√7)² =
22 +21√7.
д)
(4√5 - 5√2)² =(4√5)² -2* 4√5*5√2 +(5√2)² =16*5 -40√10 +25*2 =
130 -40√10
.
1 votes
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Answers & Comments
Verified answer
а) (7√2 -3√3)(7√2 +3√3) =(7√2)² -(3√3)² =98 -27 =71.б) √49*√0,09 +√(2³+1) = 7*0,3 +3 =5,1.
в) 18(-1/3*√5)² -1/6(4√3)² =18*5/9 -1/6*16*3 =10 -8 =2.
г) (12-√7)(3+2√7) = 12*3 +12*2√7 -3√7 -2*(√7)² =22 +21√7.
д) (4√5 - 5√2)² =(4√5)² -2* 4√5*5√2 +(5√2)² =16*5 -40√10 +25*2 =130 -40√10.