1)(a-4b)^2+18ab=a^2-8ab+16b^2+18ab=a^2+10ab+16b^2;
(5-c)^2-2(-c+9)=25-10c+c^2+2c-18=c^2-10c-7;
2)10(3x+4)-16x=6-x
30x+40-16x+x=6
15x=6-40
15x=-36
x=-36\15
x=-12\5
x=-2,4
\ - дробь
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
1)(a-4b)^2+18ab=a^2-8ab+16b^2+18ab=a^2+10ab+16b^2;
(5-c)^2-2(-c+9)=25-10c+c^2+2c-18=c^2-10c-7;
2)10(3x+4)-16x=6-x
30x+40-16x+x=6
15x=6-40
15x=-36
x=-36\15
x=-12\5
x=-2,4
\ - дробь