Coroana daca faceti rezolvare completa si corecta !
13.se considera numere reale a, x≠0.Calculati :
a) x⁴: x²+x·x+2·x²
b) x³·x²-2x·x·x³+x⁷:x²
c)(a²)²:a³+a·a·a-a·a²
d)y⁵·y⁴-2y·¹³:y⁵+3y¹²:y
e)(x³)⁴:(x²)⁵+4x²_(3x)²
f)a²⁰"(-a)¹⁶+5a·(-a³)+(-2a)²
14 Fie numerele reale a,x,y ≠0.Calculati
a)3x²y-(6x⁴y):(3x²)+2x·4xy
b)5x³·(-2x²y²)-2x·y·x⁴·y+(-4x⁴y)·(-2xy)
c)ax³-3x²·(0,5ax)+3x·(-0,2ax)·5x