Home
О нас
Products
Services
Регистрация
Войти
Поиск
вульфорс
@вульфорс
March 2022
1
20
Report
Помагите решить по быстрей
Please enter comments
Please enter your name.
Please enter the correct email address.
Agree to
terms of service
You must agree before submitting.
Send
Answers & Comments
sangers1959
Verified answer
1)
3^(5x+12)=81
3^(5x+12)=3^4
5x+12=4
5x=-8
x=-1,6.
2)
(1/5)^(2x-3)=25^(4-3x)
5^(3-2x)=5^(8-6x)
3-2x=8-6x
4x=5
x=1,25.
3)
4ˣ-17*2ˣ+16=0
2²ˣ-17*2ˣ+16=0
2ˣ=t>0
t²-17t+16=0 D=225
t₁=16 2ˣ=16 2ˣ=4⁴ x₁=4
t₂=1 2ˣ=1 x₂=0.
4)
8^(2x²-7x-4)=1
8^(2x²-7x-4)=8^0
2x-7x-4=0 D=81
x₁=4 x₂=-0,5.
0 votes
Thanks 0
×
Report "Помагите решить по быстрей..."
Your name
Email
Reason
-Select Reason-
Pornographic
Defamatory
Illegal/Unlawful
Spam
Other Terms Of Service Violation
File a copyright complaint
Description
Helpful Links
О нас
Политика конфиденциальности
Правила и условия
Copyright
Контакты
Helpful Social
Get monthly updates
Submit
Copyright © 2025 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Verified answer
1)3^(5x+12)=81
3^(5x+12)=3^4
5x+12=4
5x=-8
x=-1,6.
2)
(1/5)^(2x-3)=25^(4-3x)
5^(3-2x)=5^(8-6x)
3-2x=8-6x
4x=5
x=1,25.
3)
4ˣ-17*2ˣ+16=0
2²ˣ-17*2ˣ+16=0
2ˣ=t>0
t²-17t+16=0 D=225
t₁=16 2ˣ=16 2ˣ=4⁴ x₁=4
t₂=1 2ˣ=1 x₂=0.
4)
8^(2x²-7x-4)=1
8^(2x²-7x-4)=8^0
2x-7x-4=0 D=81
x₁=4 x₂=-0,5.