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batunechkaopasniy
@batunechkaopasniy
July 2022
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Умные люди, помогите
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sedinalana
Verified answer
(4√7-8)²=16*7-2*4√7*8+64=112-64√7+64=176-64√7
(3√5-9√2)²=9*5-2*3√5*9√2+81*2=45-54√10+162=207-54√10
(√21+4)²=21+8√21+16=37+8√21
(√12-√7)(√12+√7)=(√12)²-(√7)²=12-7=5
(4√3-5)(4√3+5)=(4√3)²-5²=48-25=23
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Answers & Comments
Verified answer
(4√7-8)²=16*7-2*4√7*8+64=112-64√7+64=176-64√7(3√5-9√2)²=9*5-2*3√5*9√2+81*2=45-54√10+162=207-54√10
(√21+4)²=21+8√21+16=37+8√21
(√12-√7)(√12+√7)=(√12)²-(√7)²=12-7=5
(4√3-5)(4√3+5)=(4√3)²-5²=48-25=23