a/ x.(x + 7) = 0
=> x = 0
hoặc x + 7 = 0 => x = -7
Vậy x = 0 . x = -7
b/ (x + 12)(x - 3) = 0
=> x + 12 = 0 => x = -12
hoặc x - 3 = 0 => x = 3
Vậy x = -12 ; x = 3
Tìm x :
1) -12 + 3 . ( -x +7 ) = -18
2) x . ( x + 7 ) = 0
3) ( -x + 5 ) . ( 3 - x ) = 0
4) ( x + 12 ) . ( x - 3 ) = 0
5) x . ( 2 + x ) . ( 7 - x ) = 0
6) ( x - 1 ) . ( x + 2 ) . ( -x - 3 ) = 0
Tìm x:x³-9/16*x=0 giupa mk vs ạ mk cần gấp
tìm x
x.(x+7)=0
(x+12).(x-3)=0
(-x+5).(3-x)=0
x.(2+x).(7-x)=0
(x-1).(x+2).(-x-3)=0
Tìm biết: a) x (x - 6) = 0; b) x (x + 5) = 0; c) (x + 3)(x - 7) = 0; d) (x - 3) ( x 2 + 12) = 0
Bài 13: Tìm x biết: a) (x-2)(x-3)-D0. b) (x-3)(x-4)-0. c) (x-7)(6-x)=0. d) (x-3)(x-13)=0. The Bài 14: Tìm x biết: a) (12-x)(2-x)=0. b) (x-33)(11-x)=0. c) (21-x)(12-x)=0. d) (50-x)(x-150) =0. Bài 15: Tìm x biết: a) 2x +x = 45. b) 2x +7x = 918. c) 2x+3x 60+5. d) 11x+22x 33.2.
Tìm x thuộc Z biết: a) x (x - 7) = 0; b) x (x + 11) = 0; c) (x + 8) (x - 12) = 0; d) (x - 3) ( x 2 + 3) = 0;
Tìm x
1. x(x+7)=0
2. (x+12)(x-3)=0
3. (-x+5)(3-x)=0
4. x(2+x)(7-x)=0
5. (x-1)(x+2)(-x-3)=0
tìm x
1/ x.(x+7)=0
2/ (x+12).(x-3)=0
3/ (-x+5).(3-x)=0
4/ x.(2+x).(7-x)=0
5/ (x-1).(x+2).(-x-3)=0
tìm x
x.(x+7)=0
(x+12).(x-3)=0
(-x+5).(3-x)=0
Tìm x:
a) x.x+7)=0
b) (x+12).(x-3)=0
c) (-5+5).(3-x)=0
d)x.(2+x).(7-x)=0
e) (x-1).(x-2).(-x-3)=0
