x²/(x²-9)=12-7x/(9-x²)
x²/(x²-9)=7x-12/(x²-9) ОДЗ: x²-9≠0 (x-3)(x+3)≠0 x₁≠3 x₂≠-3.
x²=7x-12
x²-7x+12=0 D=1
x₁=4 x₂=3 ∉ОДЗ.
Ответ: x=4.
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Verified answer
x²/(x²-9)=12-7x/(9-x²)
x²/(x²-9)=7x-12/(x²-9) ОДЗ: x²-9≠0 (x-3)(x+3)≠0 x₁≠3 x₂≠-3.
x²=7x-12
x²-7x+12=0 D=1
x₁=4 x₂=3 ∉ОДЗ.
Ответ: x=4.