Question

Determinati a € R ptr care enunturile de mai jos devin prop adevarate : a) Ecuatia 2x + a = 0 are solutia -5 b) -ax +12 = 0 are solutia 1 c) Ecuatia ax+a +1= 0 are solutia2 d) Ecuatia 3x-a+2 = 0 are solutia 1/3 e) Ecuatia a la puterea a doua x +9= 0 are solutia -1 f) Ecuatia a la puterea a doua x-2a = 0 are solutia 4

Answer 1

a)2x-5=0. b)-1*x+12=0
2x=-5. -1x= -12
x= -5/2. x=12
c)2x+2+1=0. d)3x-1/3+2=0
2x+3=0. 9x/3-1/3+6/3=0
2x= -3. 9x/3-5/3=0
x= -3/2. 9x/3=5/3
x=5/9
Ultimele doua cu puteri nush sa fac,sper ca te-am ajutat totusi.