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polunova2000
@polunova2000
July 2022
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Помогите решить 2 номера :) хотя бы один. Спасибо заранее :)
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пимочка
№421.
а) √75 + √48 - √300 = 5√3 + 4√3 - 10√3 = -√3
б) 3√8 -√50 + 2√18 = 6√2 - 5√2 + 6√2 = 7√2
в) √242 - √200 + √8 = 11√2 - 10√2 + 2√2 = 3√2
г) √75 -0,1√300 - √27 = 5√3 - √3 - 3√3 = √3
д) √98 - √72 + 0,5√8 = 7√2 - 6√2 + √2 = 2√2
№422.
а) √8р - √2р + √18р = 2√2р - √2р + 3√2р = 4√2р
б) √160с + 2√40с -3√90с = 4√10с + 4√10с - 9√10с = -√10с
в) 5√27m - 4√48m - 2√12m = 15√3m - 16√3m - 4√3m = -5√3m
г) √54 - √24 + √150 = 3√6 - 2√6 + 5√6 = 6√6
д) 3√2 + √32 - √200 = 3√2 + 4√2 - 10√2 = -3√2
е) 2√72 - √50 -2√8 = 12√2 - 5√2 - 4√2 = 3√2
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Answers & Comments
а) √75 + √48 - √300 = 5√3 + 4√3 - 10√3 = -√3
б) 3√8 -√50 + 2√18 = 6√2 - 5√2 + 6√2 = 7√2
в) √242 - √200 + √8 = 11√2 - 10√2 + 2√2 = 3√2
г) √75 -0,1√300 - √27 = 5√3 - √3 - 3√3 = √3
д) √98 - √72 + 0,5√8 = 7√2 - 6√2 + √2 = 2√2
№422.
а) √8р - √2р + √18р = 2√2р - √2р + 3√2р = 4√2р
б) √160с + 2√40с -3√90с = 4√10с + 4√10с - 9√10с = -√10с
в) 5√27m - 4√48m - 2√12m = 15√3m - 16√3m - 4√3m = -5√3m
г) √54 - √24 + √150 = 3√6 - 2√6 + 5√6 = 6√6
д) 3√2 + √32 - √200 = 3√2 + 4√2 - 10√2 = -3√2
е) 2√72 - √50 -2√8 = 12√2 - 5√2 - 4√2 = 3√2