3x2-15x-(3x2-x-2)=30
3x2-15x-3x2+x+2=30
-14x+2=30
-14x=28
x=-2
3x2-15x-(3x2-x-2)=30
3x2-15x-3x2+x+2=30
-14x+2=30
-14x=28
x=-2
tìm x , biết
a. 4x(x-5)-(x-1)(4x-3)=5
b. (3x-4)(x-2) = 3x(x-9)-3
c.2(x+3)-x2 -3x=0
d. 8x3-50x=0
e. (4x-30)2-3x(3-4x)
Tìm x, biết
3x(x-5)+(x-1)(2+3x)=6x+30
Tìm x, biết :
a) ( 3x - 5 ) ( 5 - 3x ) + 9 ( x + 1 ) ^2 = 30
b) ( x + 4 ) ^2 - ( x + 1 ) ( x - 1 ) = 16
tìm x biết:
(3x-5).(5-3x)+9.(x+1)^2=30
Tìm x
a) (x + 3)2 + (x + 2)(5 – x) = 1
b/ (2x – 1)2 – ( x – 5)( 4x + 3) = 3
c/ 3x (x – 2) + 4x – 8 = 0
d/ 2x (3x + 5) – 18x – 30 = 0
1. Thực hiện phép tính
(x+1)(x+2)(x+3)
2. Tìm x
a, 3x(x-5)-(x-1)(2+3x)=30
b, (x+2)(x+3)-(x-2)(x+5)=0
c,(3x+2)(2x+9)-(x+2)(6x+1)=9
Tìm x:
1, x(x-20)+x-2=0
2, 5x(x-3)-x+3=0
3, 3x(x-5)-(x-1)(2+3x)=30
4, (x+2)(x+3)-(x-2)(x+5)=0
Tìm x biết:
x3 + (x - 1)3 = (2x - 1)3
(3x - 5)(5 - 3x) + 9(x + 1)2 = 30
x(x + 5)(x - 5) - (x + 2)(x2 - 2x + 4) = 42
Tìm x
(3x-5)(5-3x)+9(x+1)2 =30
(x+4)2-(x+1)(x-1)=16
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