Ответ:
1.
а) 8x * 3y * (-5y) - 7 * (-4y) = -120x + 28y
б) 3 - 11t - 5 + 5t - 3 + 11 = -5 - 6t + 11
в) 3 + 3a + 5 + 3a - 8 - 10 = -5 + 6a - 5
2.
а) -x - 3y - 4 + 2y = -x - y - 4
При x = 15; y = -4 -x - y - 4 = -15 + 4 - 4 = -15
б) 3 + - 2 + - = + + -
При = 1; = -1 + + - = -1 + 1 + 1 - 1 = 0
Объяснение:
Copyright © 2025 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Ответ:
1.
а) 8x * 3y * (-5y) - 7
* (-4y) = -120x
+ 28
y
б) 3
- 11t - 5
+ 5t - 3
+ 11 = -5
- 6t + 11
в) 3![a^{2} a^{2}](https://tex.z-dn.net/?f=a%5E%7B2%7D)
+ 3a
+ 5
+ 3a
- 8
- 10
= -5![a^{2} a^{2}](https://tex.z-dn.net/?f=a%5E%7B2%7D)
+ 6a
- 5![a^{3} a^{3}](https://tex.z-dn.net/?f=a%5E%7B3%7D)
2.
а) -x - 3y - 4 + 2y = -x - y - 4
При x = 15; y = -4 -x - y - 4 = -15 + 4 - 4 = -15
б) 3![u u](https://tex.z-dn.net/?f=u)
+
- 2
+
-
= ![u u](https://tex.z-dn.net/?f=u)
+
+
- ![u^{4} u^{4}](https://tex.z-dn.net/?f=u%5E%7B4%7D)
При
= 1;
= -1 ![u u](https://tex.z-dn.net/?f=u)
+
+
-
= -1 + 1 + 1 - 1 = 0
Объяснение: