Помогите решить номер 26 (2 столбик) , 28 (а), 45 (весь). Created by frozenolaf1. algebra-ru

Помогите решить номер 26 (2 столбик) , 28 (а), 45 (весь)...

frozenolaf1 @frozenolaf1

March 2022 1 8 Report

Помогите решить номер 26 (2 столбик) , 28 (а), 45 (весь)

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ndusha

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26
б)√3(6-2√3)=6√3-2√3√3=6√3-2*3=6√3-6
г)√7(√3-√7)=√7√3-√7√7=√21-7
е)-√2(√2-√3)=-√2√2+√2√3=-2+√6=√6-2
з)√6(√2-2√5)=√6√2-2√6√5=√12-2√30=√(4*3)-√30=√4√3-√30=2√3-√30

28 а)Р=3√2+5√2+4√2=12√2
S=3√2*4√2/2=3*4*2/2=3*4=12

45
а)(2√5)²=2*2*√5√5=4*5=20
б)(-0,5√9)²=0,25*9=2,25
в)(1/2√12)²=1/4*12=3
г)(2/9√81)²=4/81*81=4
д)(-1,1√2 3/4)²=(-1 1/10√11/4)²=(-11/10√11/4)²=121/100*11/4=
=1331/400=3 131/400=3,3275

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