Răspuns :
Raspuns:
Explicație pas cu pas:
1)
a)3x+5-(2x+7y-2)+(x-5y+3)
ELIMINA PARANTEZELE;
3x+5-2x-7y+2+x-5y+3
REDU TERMENII ASEMEANEA:
2x+5-7y+2-5y+3
b)(0,15x+3,5y)-(-7,85x+0,5y)-3/5x+8
ELIMINA PARANTEZELE:
0,15x+3,5y+7,85x-0,5y-3/5x+8
REDU TERMENII ASEMENEA:
3/20x+3y+157/20x-3/5x+8
c)(-5xy)×4x^2y-(5xy^2)(-2x^2)+(-3y^2)(+4x^3)(-2)
ELIMINA PARANTEZELE:
-20x^2y+1y-5xy^2×(-2x^2)+24x^3y^2
REDU TERMENII ASEMENEA:
-20x^2y+1y+34x^3y^2
d)3x×(4x^2-2x+1)-2(x^3-x^2+x-1)
ELIMINA PARANTEZELE:
12x^3-6x^2+3x-2x^3+2x^2-2x+2
REDU TERMENII ASEMENEA:
10x^3-6x^2+3x+2x^2-2x+2
e)18x^5:(-3x^3)+2x(x-1)-(24x^4):(2x^2)
ELIMINA PARANTEZELE:
-18x^5/3^3+2x^2-2x-24x^4:(2x^2)
REDU TERMENII ASEMENEA:
-2x^5/3-10x-2x
f)(x^4)^3+(x^2)^6-2x^12+(-2/3x^2)^3
AICI NU CRED CA MERGE SA ELIMINI PARANTEZELE
REDU TERMENII ASEMENEA:
0+(-2/3x^2)^3
2)
AR TREBUI SA PUI CATE UN EXERCITIU LA O INTREBARE,SA STII DE ACUM