1)4x^2 + 20 х = 0
х ( 4 х+20) =0
х=0 или x=-5
2) у^ 2 + 6 у <2 у +6
y^2+6y-2y-6<0
y^2+4y<6
y(y+4)<6
y<6 y<2
3)x^2-8x+5x-40>x^2+7x-32
-8x+5x-40-7x+32>0
-10x-12>0
-10x>12 |÷-10
x<-1,2
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
1)4x^2 + 20 х = 0
х ( 4 х+20) =0
х=0 или x=-5
2) у^ 2 + 6 у <2 у +6
y^2+6y-2y-6<0
y^2+4y<6
y(y+4)<6
y<6 y<2
3)x^2-8x+5x-40>x^2+7x-32
-8x+5x-40-7x+32>0
-10x-12>0
-10x>12 |÷-10
x<-1,2