Алгебра 10 класс срочно!. Created by helpMePlease11111. algebra-ru

Алгебра 10 класс срочно!...

helpMePlease11111 @helpMePlease11111

September 2021 1 6 Report

Алгебра 10 класс
срочно!

Answers & Comments

oganesbagoyan

Verified answer

1) (x+1)(x+7)(x-3)²/(x-1)(x+1) ≤0 ; * * * x ≠ ±1 * * *
x =3 решение.
(x+7)/(x-1)≤0⇒ x∈[ -7 ; 1) из интервала  исключаем x= -1.
ответ: x∈ [ -7;-1)U(-1;1) U {3} .

2) (x-5)(4-x)(x-3)² (x+6)^(15) ≥0
(x+6)^(15)*(x-3)²(x-4)(x-5) ≤0 ;
- + +    - +
--------- [-6] --------[3] ---------[4]--------[5]-----------

ответ: x∈ ( -∞;-6] U {3}  U   [4;5] .
3) (x²-11x+30)/(x-2)(x-3) <0;
(x-5)(x-6)/(x-2)(x-3) <0;
⇔(x-2)(x-3)(x-5)(x-6) <0 ;
+ - + -    +
--------- 2 -------- 3 ---------5--------6---------
ответ: x∈ ( 2;3] U ( 5 ;6).
4) x² +11x+30 ≥ 0 ;
(x+6)(x+5) ≥ 0 ;
+    - +
--------- [ -6] -------- [-5] --------
ответ: x∈ ( -∞; -6] U [ -5 ;∞).

1 votes Thanks 1

helpMePlease11111 Спасибо!

sostavte po 1 predlozheniyu s frazami on my own tested a reply apologized for m

Answer

Answers & Comments

Verified answer

sostavte po 1 predlozheniyu s frazami on my own tested a reply apologized for m

рекомендуемые вопросы

Helpful Links

Helpful Social