9*9+9+9=81+18=99
b=2
c=4
b+c=6
b-c=-2
c-b=2
120+20-30+60=110+60=170
5*5+55-5=25+50=75
(2x+6)(3x+9)=0
6x^2+18x+18x+54=0
6x^2+36x+54=0/6
x^2+6x+9=0
x1=-3
x2=-3
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
2) сумма 6; разность 2
3) 170
4) 75
9*9+9+9=81+18=99
b=2
c=4
b+c=6
b-c=-2
c-b=2
120+20-30+60=110+60=170
5*5+55-5=25+50=75
(2x+6)(3x+9)=0
6x^2+18x+18x+54=0
6x^2+36x+54=0/6
x^2+6x+9=0
x1=-3
x2=-3