Задание 150

PIC

Answers

1.
(13 − 23)(13 + 23 = (13)2 − (23)2 = 13 − 4 ⋅ 3 = 13 − 12 = 1

2.
(1 − 5 )2 = |1 −5| = 5 − 1

3.
10 − 221 = (7 − 3 )2 = 7 −3

4.
6 − 25 = (5 − 1)2 = |5 − 1| = 5 − 1

5.
(1 − 10 )2−(10 − 2)2 = |1−10|−|10−2| = 10−1−(10−2) = 10−1−10+2 = 1

6.
(3−11)2+620 − 611 = 9−611+11+6(11 − 3)2 = 20−611+6(11−3) = 20−611+611−18 = 2

7.
3 + 6 3 − 6−3 − 6 3 + 6 = (3 + 6)2 (3 − 6)(3 + 6)− (3 + 6 )2 (3 + 6)(3 − 6) = (3 + 6)2 − (3 − 6)2 9 − 6 =

= 3 + 6 − 3 + 6 3 = 26 3 = 22 = 8

8.
(3 3 − 1 33)(3 −3 1 + 3+3 + 3 3 − 1) = 3 − 1 33 ⋅((3 −3)(3 − 1) + (3 + 3)(1 + 3) (1 + 3)(3 − 1) ) = 2 33⋅33 − 3 − 3 + 3 + 3 + 33 + 3 + 3 2 =

= 83 33 = 8 3 = 22 3

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2021-07-31 00:00
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