\(\left(x-4\right)\left(x+4\right)-\left(x-4\right)\left(2x-1\right)=0\Leftrightarrow\left(x-4\right)\left(x+4-2x+1\right)=0\)
\(\Leftrightarrow\left(x-4\right)\left(-x+5\right)=0\Leftrightarrow x=4;x=5\)
BT2: Tìm x 2, 3x(x-4)+2x-8=0 3, 4x(x-3)+x^2-9=0 4, x(x-1)-x^2+3x=0 5, x(2x-1)-2x^2+5x=16
a) 2x2 + 2x(5 - x)=12 d) 2(x + 5) - x2 - 5x = 0 g) (3x + 1)2 - (x+1) = 0
b) (5 - 2x)2 - 16 = 0 e) (2x - 1)2 - 4(x + 7)(x - 7) = 0 h) x2 + 7x - 8 = 0
c) 3x2 - 3x(x-2) = 36 f) (x + 4)2 - (x + 1)(x - 1) = 16 i) -2x2 +13x -15 = 0
mik cần gấp, cảm ơn mọi người.
tìm x
a(2x+1)(x-4)=(2x+1)^2
b(x-4)(x^2+4x-16)-(x^2-6)=2
c( 2x-1)^2-(3x+4)^2=0
d(9x+2)(x-1)-(3x-1)^2=0
e(2x+3)^2-4(x-1)(x-1)(x+1)=0
f)15x(x+4-6x-24=0
g)(4-10x)(2-3x)-30^2=0
giải giùm mik nha các bn :3
giải các phương trình tích sau:
1, 3x(x-2) = 7(x-2)
2, 2x^2 = x
3, x^2(x^2+1) = 0
4, x^3+9x = 6x^2
5, (x+3)(x-3) = 16
6, (x-6)(x+4) = 2(x+1)
7, (x-1)^2 = 4
8, (2x+1)^2 = (x-1)^2
9,(x^2-1)(2x-1) = (x^2-1)(x+2)
10, x^2-9x+20 = 0
11, x^2+2x-15 = 0
12, x^3-4x^2+5x = 0
13,x^3+4x^2+x-6 = 0
14, x^3-3x^2+4 = 0
15, x^4+2x^3+2x^2-2x-3 = 0
16, (x^2+x)(x^2+x+1) = 6
mk cần gấp mai mk đi học
Tìm x: a) 2x(x-3)-x(3+2x)=26
b) (x+4)2-(x+1)(x-1)=16
c) (2x-1)2-4(x+7)(x-7)=0
d) x(x-5)-4x+20=0
Tìm x: a) 2x(x-5)-x(3+2x)=26
b) (x+4)2-(x+1)(x-1)=16
c) (2x-1)2-4(x+7)(x-7)=0
d) x(x-5)-4x+20=0
tìm x
(x+4)2- (x+1)(x-1)= 16
(2x-1)2+ (x+3)2- 5(x+7)(x-7)=0
1) (4-3x) (10x-5)=0
2) (7-2x) (4+8x) = 0
3) (9-7x) (11-3x) = 0
4) (7-14x) (x-2) = 0
5) (2x+1) (x-3) = 0
6) (8-3x) (-3x+5) = 0
7) (16-8x) (2-6x) = 0
8) (x+4) (6x-12) = 0
9) (11-33x) (x+11) = 0
10) (x-1/4) (x+5/6) = 0
11) (7/8-2x) (3x+1/3) = 0
12) 3x - 2x^2 = 0
13) 5x + 10x^2 = 0
14) 4x + 3x^2 = 0
15) -8x^2 + x =0
16) 10x^2 - 15x = 0
17) x^2 -4 =0
18) 9 - x^2 = 0
19) x^2 -1 = 0
20) (x-3) (2x-1) = (2x-1) ( 2x+3)
21) (5+4x) (-x+2) = (5+4x) (7+5x)
22) (4+x) (x-5) = (3x-8) (x-5) = 0
23) (3x-8) (7-21x) - (9+2x) (7-21x)
24) (10+ 7x) (x+1) = (9x-2)(x-1)
25) (9x-4) (x-1/2) - (x-1/2) (6+x) = 0
26) 9x^2 - 1 = (3x-1) (x+4)
27) (x+7) (3x+1) = 49-x^2
28) (2x+1)^2 = (x-1)^2
29)x^3- 5x^2+6x = 0
30) 3x^2 + 5x + 2 = 0
Giảii giúpp mìnhh đyy mọii ngườii .
tìm x: part 1 : a,(x^3)^2-(x+1)(x-1)=1 b,(x-2)^2-3(x-2)=0 c,(x+2)(x^2-2x+4)-x(x^2+2)=15 d,(x+1)^2-(x+1)(x-2)=0 e,4x(x-2017)-x+2017=0 f,(x+4)^2-16=0 part 2: a,x^3+27+(x+3)(x-9)=0 b,(2x-1)^2-4x^2+1=0 c,2(x-3)+x^2-3x=0 d,x^2-2x+1=6x-6 e,x^3-9x=0
Giải phương trình
1)(x-2)(x-1)=x(2x+1)+2
2)(x+2)(x+2)-(x-2)(x-2)=8x
3)(2x-1)(x^3-x+1)=2x^3-3x^2+16=0
4)(8x-3)(3x+2)-(4x+7)(x+4)=(2x+1)(5x-1)
5)(8-5x)(x+2)+4(x-2)(x+1)+2(x-2)(x+2)=0
6)4(x-1)(x+5)-(x+2)(x+5)=3(x-1)(x+2)
