Các câu hỏi tương tự
giúp mình nhe :>
A)3x^2-x(3x-5)=9
B)5x^2+9x-2=0
C)x/x+5-x-2/x=2x-1/x^2+5x
D)4(5-3x)=5x-5
E)2x^2-11x+14=0
F)3/2x+3-5/x(2x+3)=4/x
1) 2x – (3 – 5x) = 4( x +3)
2) 5(2x-3) - 4(5x-7) =19 - 2(x+11)
3) 5x - 4(6-x)(x + 3) = (4-2x)(3-2x) + 2
4) (x - 1)3 - (3x + 2)(-12) = (x2 + 1)(x - 2) - x2
5) (3x -1)2 - (x +3)(2x-1) = 7(x + 1)(x -2) -3x
mn giúp mình vs
d) (3x – 5)(7 – 5x) – (5x + 2)(2 – 3x) = 4 g) 3(2x - 1)(3x - 1) - (2x - 3)(9x - 1) =0 j) (2x – 1)(3x + 1) – (4 – 3x)(3 – 2x) = 3 k) (2x + 1)(x + 3) – (x – 5)(7 + 2x) = 8 m) 2(3x – 1)(2x + 5) – 6(2x – 1)(x + 2) = - 6
Tìm x biết
a) 6x(3x+5)-2x(9x-2)=17
b) 2x(3x-1)-3x(2x+11)-70=0
c) 5x(2x-3)-4(8-3x)=2(3+5x)
Giải chi tiết giúp mình nhé!!!!
các bạn giúp mik bài này vs
5) (4x-5).(x+2)-(x+5).(x-3)-3x^2-x
6) (x-3).(x+7)-(2x-1).(x+2)+x.(x-1)
7) (7x-3).(2x+1)-(5x-2).(x+4)-9x^2+17x
8) -2.(x-7).(x+3)+(5x-1).(x+4)-3x^2-27x
9) (6x-5).(x+8)-(3x-1).(2x+3)-9.(4x-3)
10) (8x-1).(x+7)-(x-2).(8x+5)-11.(6x+1).
1. Rút Gọn
a) -5x (x-3).(2x+4)-(x+3)(x-3)+(5x-2)(3x+4)
b) (4x-1)x(3x+1)-5x^2x(x-3)-(x-4)x(x-5)-7(x^3-2x^2+x-1)
c) (5x-7)(x-9)-(3-x)(2-5x)-2x(x-4)
d)(5x-4)(x+5)-(x+1)(x^2-6)-5x+19
e)(9x^2-5)(x-3)-3x^2(3x+9)-(x-5)(x+4)-9x^3
g) (x-1)^2 - (x+2)^2
Thanks mn nhiều ạ
Giải phương trình:
1> 12-2(1-x)2=3x-2=2x-3
2> 10x+3-5x=4x+12
3> 11x+42-2x=100-9x-22
4> 2x-(3-5x)=4(x+3)
5> 2(x-3)+5x(x-1)=5x2
6> -6(1,5-2x)=3(-15+2x)
7> 14x-(2x+7)=3x+(12x-13)
8> (x-4)(x+4)-2(3x-2)=(x-4)2
9> 4(x-2)-(x-3)(2x-5)
giải giúp mik với ạ
tính nghiệm x) 1 mũ 2 -9x+8 2)3x mũ 2 -7x+4 3)2x mũ 2+5x-7 4) 3x mũ 2-9x+6 5)x mũ 2 +2x-3
giải giúp mk vs :
a) 6x^2-5x+3=2x-3x(2-x)
b) 25x^2-9=(5x+3)(2x+1)
c) (3x-4)^2-4(x+1)^2=0
d) 3x^2-7x+4=0
e) 2x-5+3x=3x+6