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AHAHHAh
@AHAHHAh
July 2022
1
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(√2+4)²;
(√5-1)²;
(2+√17)²;
(3-√8)².
Помогите, прошу.
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nafanya2014
Verified answer
Формула
(a±b)²=a²
±2ab+b²
(√2+4)²=(√2)²+2·√2·4+4²=2+8√2+16=18+8√2;
(√5-1)²=(√5)²-2·√5+1=6-2√5;
(2+√17)²=2²+2·2√17+(√17)²=21+4·√17;
(3-√8)²=3²-2·3·√8+(√8)²=17-6√8.
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Answers & Comments
Verified answer
Формула(a±b)²=a²±2ab+b²
(√2+4)²=(√2)²+2·√2·4+4²=2+8√2+16=18+8√2;
(√5-1)²=(√5)²-2·√5+1=6-2√5;
(2+√17)²=2²+2·2√17+(√17)²=21+4·√17;
(3-√8)²=3²-2·3·√8+(√8)²=17-6√8.