Ответ:
a) 2x-5=4x+20
-2x= 25
x=-12,5
б) 12=7x-x²
x²-7x+12=0
D=49-48=1
x=7±1/2
x=4. x=3
в)2x³-8x=12x²-8x
2x³-12x²=0
2x²(x-6)=0
2x²=0
x=∅. x-6=0
x=6
г)10= 2x²-3x-2x+3
2x²-5x-7=0
D=25+56=81
x=5±9/4
x=-1. x=3,5
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Verified answer
Ответ:
a) 2x-5=4x+20
-2x= 25
x=-12,5
б) 12=7x-x²
x²-7x+12=0
D=49-48=1
x=7±1/2
x=4. x=3
в)2x³-8x=12x²-8x
2x³-12x²=0
2x²(x-6)=0
2x²=0
x=∅. x-6=0
x=6
г)10= 2x²-3x-2x+3
2x²-5x-7=0
D=25+56=81
x=5±9/4
x=-1. x=3,5