a: \(\Leftrightarrow x^2-2x-8-x^2=36\)
=>-2x=44
hay x=-22
b: \(\Leftrightarrow4x^2+x-8x-2-4x^2-27x=1\)
=>-34x=3
hay x=-3/34
c: =>(x-10)(x-1)=0
=>x=10 hoặc x=1
Tìm X:
a)(x-4)(x+4)=9
b)x2-4x+4-(5x-2)2=0
c)4x2+4+1-x2-10x-25=0
d)(x2+x+7)(x2+x-7)=(x2+x)2-7x
Tìm x:
a) 36x3-4x=0
b) 3x(x-2)-2+x=0
c) (x3-x2)-4x2+8x-4=0
d) x2-6x-16=0
e) x4-6x2-7=0
Tìm x:
a) (x-2)2-(x2-3x)=9
b) (5x-2)2=(4-x)2
c) x2-4x-5=0
Tìm x:
a) (x-2)2-(x2-3x)=9
b) (5x-2)2=(4-x)2
c) x2-4x-5=0
Tìm x:
a) 36x3-4x=0
b) 3x(x-2)-2+x=0
c) (x3-x2)-4x2+8x-4=0
d) x2-6x-16=0
e) x4-6x2-7=0
(Mình cần gấp ạ)
Tìm x, biết:
a) ( x 2 - 4x + 16)(x + 4) - x(x + l)(x + 2) + 3 x 2 = 0;
b) (8x + 2)(1 - 3x) + (6x - l)(4x -10) = -50.
Giải các phương trình sau:
g/ x(x + 3)(x – 3) – (x + 2)(x2 – 2x + 4) = 0
h/ (3x – 1)(x2 + 2) = (3x – 1)(7x – 10)
i/ (x + 2)(3 – 4x) = x2 + 4x + 4
k/ x(2x – 7) – 4x + 14 = 0
m/ x2 + 6x – 16 = 0
n/ 2x2 + 5x – 3 = 0
Tìm x:
a)(x-6)2-(x+6)2=12
b)36x2-12x+1=81
c)x2-4x-12=0
d)x2-5x-6=0
Tìm x:
a)(x+3)2-4x-12=0
b)x(x+5)(x-5)-(x-3)(x2+3x+9)=7
