Решите 3,4,5,6 , пожалуйста , очень надо срочно ;(. Created by dianadalla. algebra-ru

Решите 3,4,5,6 , пожалуйста , очень надо срочно ;(...

dianadalla @dianadalla

June 2022 1 13 Report

Решите 3,4,5,6 , пожалуйста , очень надо срочно ;(

Answers & Comments

m11m

Verified answer

3.
(x-5)(x+3)(x+2)>0
x=5 x= -3 x= -2
- + - +
---------- -3 ------------ -2 ------------- 5 -------------
\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\
x∈(-3; -2)U(5; +∞)

4.
ОДЗ: x≠5
(x+2)(x-5)≤0
x= -2 x=5
+ - +
--------- -2 ----------- 5 ----------------
\\\\\\\\\\\\\\
x∈[-2; 5)

5.
ОДЗ: x≠5
(2x-3)(x+7)(x-5)≥0
2(x-1.5)(x+7)(x-5)≥0
(x-1.5)(x+7)(x-5)≥0
x=1.5 x= -7 x=5
- + - +
--------- -7 ---------- 1.5 ----------- 5 ------------
\\\\\\\\\\\ \\\\\\\\\\\\
x∈[-7; 1.5]U(5; +∞)

6.
ОДЗ: x≠ -5, x≠5

Разложим на множители:
x²-2x-35=(x+5)(x-7)
x²-2x-35=0
D=(-2)²-4*(-35)=4+140=144=12²
x₁=(2-12)/2= -10/2= -5
x₂=(2+12)/2=14/2=7

Сокращаем:
[(x+5)(x-7)]/[(x-5)(x+5)]≥0
(x-7)/(x-5) ≥ 0
(x-7)(x-5)≥0
x=7 x=5
+ - +
---------- 5 ----------- 7 -----------
\\\\\\\\\\\ \\\\\\\\\\
x∈(-∞; 5)U[7; +∞)

0 votes Thanks 1

Answers & Comments

Verified answer

najdite vse pary chisel x i y dlya kotoryh verno neravenstvo x26x12y2 4y8

pomogite s algebroj11259e970999844ca9dbf6f2f88d1b52 11396

reshite neravenstva metodom intervalovc5474f932403a2efe5fc5ba9c05df8f5 67633

pomogite pozhalujsta s zadaniem po astronomii

kakovo znachenie prinyatiya rusyu hristianstvaaa88597b84699c1b00aef4f1806722de 20282

x2 7x 18ltbolshe ili ravno 0 metodom intervalov pomogite reshit pozhalujsta

pomogite s astronomiejf2925f810b4bb1f3035cb3974592466f 86938

pomogite s kartochkoj po geometrii pozhalujsta nuzhno najti ploshad treugolnik

postrojte pozhalujsta grafik funkcii

x i yx1

рекомендуемые вопросы

Helpful Links

Helpful Social