Question

rezolvati ecuatia:
3xla patrat-7x+4=0
5xla patrat-6x+1=0
3x+5=2
3x-8=5-75

Answer 1

3x²-7x+4=0
3x²-3x-4x+4=0
3x(x-1)-4(x-1)=0
(x-1)(3x-4)=0
x=1
x=4/3

5x²-6x+1=0
5x²-5x-x+1=0
5x(x-1)-(x-1)=0
(x-1)(5x-1)=0
x=1
x=1/5

3x+5=2  3x=-3  x=-1

3x-8=5-75  3x=-62  x=-62/3

Answer 2

a) 3x patrat - 7x + 4 = 0
   3x patrat - 3x -4x + 4 = 0
 3x (x-1) -4 (x-1)0=
(x-1)(3x-4) = 0
x1=1
x2=4/3

b)  5 x patrat - 5x -x + 1=0
5x (x-1) -1 (x-1)=0
(x-1)(5x-1)=0

x1=1
x2=1/5

c) 3x=5-2=-3
x=-1

d) 3x = -70+8 = -62
x= -62./3