Răspuns :
√2x-1=3 |2x-1|=2x+1 2x+1=3 2x=3-1 x=2/2 x=1 b)∛2x-1=3 |2x-1|=2x+1 3*(2x+1)=3 6x+3=3 6x=0 x=0 c)√2x+3=4x 2x+3=4x 2x-4x=-3 -2x=-3 x=3/2
a) 2x-1=9 => 2x=10 => x=5
c) 2x+3=16x^2 => -16x^2 +2x +3 =0 ...delta =196=> x1 =1/2 si x2 = -3/8
e) 3-x=4x^2 => -4x^2 -x +3 =0 => 4x^2 +x -3 =0... delta =49 => x1=1 si x2 = -3/2
cu atat te pot ajuta :)
c) 2x+3=16x^2 => -16x^2 +2x +3 =0 ...delta =196=> x1 =1/2 si x2 = -3/8
e) 3-x=4x^2 => -4x^2 -x +3 =0 => 4x^2 +x -3 =0... delta =49 => x1=1 si x2 = -3/2
cu atat te pot ajuta :)