Question

Va rog ma puteti ajuta si pe mne la urmatoarele exercitii??
1. 7x+3x; 2. 3x+x; 3.a-a; 4.|x|-|x|;
5. x²+3x²; 6. x la puterea3+x la puterea3+2x⁶; 7. (-a)+a-(+2a); 8.
x²+x²-2x⁴; 9. 87x-1,2x+4,28x-87x; 10. 5x+4+2x+6; 11. -(-x)+(x); 12.
1,7y+2,3y-5y; 13. √3x²+√3x²-5√3x²; 14. -3y+9y-4y+(-3+9-4)y-2y; 15.
15a-7-2a+9-13a; 16. √2x+2√2x13√2x-√2x; 17. 4x-3y+5x+1,6y+2; 18.
(2a+3b)-(a+b)-1. Ma puteti ajuta?? Va rog e URGENTTT...

Answer 1

1.10x;2.4x;3.0;4.0;5.4x²;6.2x³+2x⁶=2x³(1+x³);7.-2a;8.2x²-2x⁴=2x²(1-x²);9.3,08x;10.7x+10;11.2x;12.-y;13.-3√3x²;14.2y;15.2;16.15√2x;17.9x-1,4y+2;18.a+2b-1,Succes!

Answer 2

1.10x 
2.4x
3.0
4.
5.4x²
6.2x³+2x⁶
7.2a
8.2x²-2x⁴