\(\left(10+9\right)x-\left(5x-1\right)\left(2x+3\right)=8\)
\(\Rightarrow19x-\left(10x^2+15x-2x-3\right)=8\)
\(\Rightarrow19x-10x^2-15x+2x+3=8\)
\(\Rightarrow\left(19x-15x+2x\right)-10x^2+3=8\)
\(\Rightarrow6x-10x^2+3=8\)
\(\Rightarrow6x-10x^2=5\)
mk nghĩ à đề có nhầm lẫn
Tìm x biết (10x+9)x-(5x-1)(2x+3)=8
Bài 2 : Tìm x , biết
a) ( 3x -1 ) (2x+7) - ( x +1) (6x-5 ) = 16
b) ( 10x +9 )x - ( 5x -1 ) (2x+3 )= 8
c) ( 3x - 5 ) ( 7- 5x ) + ( 5x +2 )( 3x-2 ) -2 = 0
d) x(x + 1) ( x+6 ) - x3 = 5x
16 Tìm x, biết
a) 4(x+2)-7(2x-1)+9(3x-4)=30 ; b) 2(5x-8)-3(4x-5)=4(3x-4)+11
c) 5x(1-2x)-10(x+8)=0 ; d) (5x-3).4x-2x.(10x-3)=15
Tìm x biết
a.x^2-25-(x+5)=0
b.(10x+9)×x-(5x-1)×(2x+3)=8
giúp mk nhé cảm ơn mn rất nhìu
Tìm x
e/ (x – 3)(x – 7) – x2 = 1 f/ ( x +2)2 – ( x – 2)( x-1) = 0
g/ ( x – 1)2 – ( x – 2)( x+2) h/ ( 10x + 9).x – ( 5x – 1)(2x +3) = 8
Tìm x:
a) (3x+2).(x-1)-(x+2).(3x+1)=7
b) (6x+5).(2x+3)-(4x+3).(3x-2)=8
c) 2x.(x+3)-(x+1).(2x+1)-5=9
d) (5x+3).(4x-7)-(10x+9).(2x-3)=10
Tìm x
(3x–1)(2x+7)+(x+1)(6x–5)=(x+2)–(x–5)
(10x+9)x–(5x–1)(2x+3)=8
bạn nào giúp mình với :<
(3x-1).(2x+7)-(x+1).(6x-5)=16
(10x+9).x-(5x-1).(2x+3)=8
x.(x+1).(x+6)-x3=5x
a, (3x-1) (2x+7)-(x+1) (6x-5)
b, (10x+9).x-(5x-1) (2x+3)= 8
