..::ПОМОГИТЕ РЕШИТЬ::..
1) 2х²+5х+3=0
2) 3х²+9х+4=0
3) (х-4)(3х+15)=0
4)х²-6х+8=0
1) 2х²+5х+3=0
2) 3х²+9х+4=0
3) (х-4)(3х+15)=0
4)х²-6х+8=0
More Questions From This User See All
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
D=b²-4ac=5²-4×3×2=1
x=(-b+/-√D)/2a=(-5+/-√1)/4⇒x1=-1, x2=-1,5
2)не знаю
3)3x²+3x-60=0 /÷3
x²+x-20=0
D=9² x1=4, x2=-5
4)D=2² x1=4, x2=2