Vu Dinh Tu's Profile

x²-25=0

x²-5²=0

(x-5)(x+5)=0

th1:

x-5=0

x=0+5

x=5

th2:

x+5=0

x=0-5

x=-5

vay x=5 hoac x=-5

 

nhap vao ban phim 1 xau .In ra man hinh xau do duoc viet hoa tat ca cac chu cai.

4x²+4x-5=0

4x²+4x-4-1=0

(4x²+1)-(4x+4)=0

4x(4+1)-(4x+1)=0

(4x-1)(4x+1)=0

TH1:                                           TH2:

4x-1=0                                         4x+1=0

4x    =0+1                                    4x    =0-1

4x     =1                                       4x    =-1

  x      =1/4                                    x    =-1/4   

vay x=1/4 hoac -1/4                           

Her family cooked dinner for yesterday by Mai

She has lived in the city for 10 years ago

They are't doing their homework while thier mother cooking on my uncle's farm.

nhap vao ban phim 1 xau .In ra man hinh xau do duoc viet hoa tat ca cac chu cai.