Các câu hỏi tương tự
ai giúp e với
tìm x :
3x ( x + 1 ) - 2x ( x + 2 ) = - 1 - x
4x ( x - 2019 ) - x + 2019 = 0
( x - 4 )^2 - 36 = 0
x^2 + 8x + 16 = 0
x ( x + 6 ) - 7x - 42 = 0
25x^2 - 9 = 0
3x(x-3)_4x+12=0
x^3-5x=0
(3x-2)^2-(x+2)^2=0
x^2-9-4(x+3)=0
chứng minh rằng với mọi x ϵ R
x^2-8x+17>0
x^2+4x+5>0
x^2-x+1>0
-x^2-4x-5<0
-x^2-3x-4<0
-x^2+10x-27<0
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).
mí pn giúp mk giải vs ạ !!!
1) x2 +5x +6 = 0
2) x3 - x2 = 4x2- 8x+4
3) 2(x+3)-x2-3x=0
4) x2+4x+3=0
5) x2+3x+3=0
tìm X 7x(2x+5)-3x(x+8)=-55
x2+4x+3=0x2+4x+3=0
x3-0,25x=0,3-0,25x=0
giúp mk vs ạ
1) x2 + 5x +6 = 0
2) x3 - x2 + 4x2 - 8x +4
3) x2 + 4x +3 =0
4) x2 + 3x+3 =0
bài 1 tìm x:
1, 2(x+2)-(3x+1)(x+2)=0
2, 3x(x-3)-(2x-6)=0
3, (2x-1)2=(3x-5)2
4, (4x+3)(x-1)=x2-1
5, 6-4x-(2x-3)(x-3)=0
6, 2x2-5x-7=0
7, x2-x -12=0
8, 3x2+14x-5=0
giúp vs
Bài 1: tìm X biết
a) 4(18-5x)-12(3x-7)=15(2x-16)-6(x+14)
b) 5(3x+5)-4(2x-3) =5x+3(2x+12)+1
c) 2(5x-8)-3(4x-5)=4(3x-4)+11
d) 5x-3{4x-2[4x-3(5x-2)]}=182
Các bạn giúp mink vs mink đang cần gấp