Các câu hỏi tương tự
a , | 4x + 2020 | = 0
b , | 2x + 1/4 | + | -5 | = | -14 |
c , | 2020 - 5x | - | 3 | = - | -8 |
d , | x mũ 2 + 4x | = 0
e , | x-1 | + 3x = 1
g , | 2-3x | + 3x = 2
h , | 5x-4 | + 5x = 4
i , | x - 1/4 | - | 2x + 5 | = 0
k , | 5x - 7 | - | 8-5x | = 0
n , | x mũ 3 - 4x | =0
Tìm x, biết :
|5x - 4| = |x + 2|
|2x - 3| - |3x + 2| = 0
|5/4. x - 7/2| - | 5/8. x + 3/5| = 0
|7x + 1| - |5x + 6| = 0
x^2 - 7x + 6 = 0
x^2 - 5x + 4 = 0
a. 3+5x=4.(3x-1)+5 b. 8-7.(x+2)=3.(x-1)-4
c\(\dfrac{8+5x}{3}=\dfrac{4-2x}{4}\) d.4x2+1=1 e. 9(x-1)2-1=0
Tìm x:
1)3x^2-17x+10=0
2)x^4-4x^3+5x^2-4x+4+0
Tìm x:
a//(5x+3)-(x-1)=0
b/(3x-2)-(5x+4)=(x-3)-(x+5)
Cho biết x^2-5x+1=0. Tính x^2/x^4+1
(2x-8)^4+(3y+45)^2=0
(2x-10)^6+(x+y-7)^4=0
(5x-15)^8+(2x-y+4)^4=0
(2x-8)^4+(3y+45)^2=0
[(x-4)(2-5x)/(x+3)]<0
Cho đa thức f(x)= -3x^4 - 5x^2 + 13x^4 - 7x + 5x^3 - 10-x^2 + 7x - 2
Chứng tỏ rằng f(-1) + f(1) + 14 = 0