Tìm \(x\in N\) sao cho \(\left(2^x-8\right)^3+\left(4^x+13\right)^3=\left(4^x+2^x+5\right)^3\)
Tìm x biết :
\(\left(2^x-8\right)^3+\left(4^x+13\right)^3=\left(4^x+2^x+5\right)^3\)
Help me !!!
Phân tích các đa thức sau thành nhân tử :
1) x3- 7x + 6
2) x3 - 9x2 + 6x + 16
3) x3 - 6x2 - x + 30
4) 2x3 - x2 + 5x +3
5) 27x3 - 27x2 + 18x - 4
6) x2 + 2xy + y2 - x - y - 12
7) ( x + 2 )( x + 3 )( x + 4 )( x + 5 ) - 24
8) 4x4 - 32x2 + 1
9) 3( x4 + x2 + 1 ) - ( x2 + x + 1 )2
10) 64x4 + y4
11) a6 + a4 +a2b2 + b4 - b6
12) x3 + 3xy + y2 - 1
13) 4x4 + 4x3 + 5x2 + 2x + 1
14) x8 + x + 1
15) x8 + 3x4 + 4
16) 3x2 + 22xy + 11x + 37y + 7y2 + 10
17) x4 - 8x + 63
Giải phương trình sau:
1, |x+8|=4x-10
2, |x-9|=2x+13
3, |x-1|-2|x|=-2
4, |2x-5|=|x+3|
5, |x-1|=|3x+10|
Tìm x
1) 2-3x=5x +10
2) 13-7x =4x-20
3) 11-9x =3 -7x
4) 5( 2x -3 ) - 4 ( 5x-7) = 19-2 ( x+11)
5) 4 ( x+3) -7x+17= 8( 5x -1)+166
6) 17-14(x+1)=13-4(x+1)-5(x-3)
7)5x-3,5+ ( 3x-4)
8) 7 (4x +3)- 4 (x-1)= 15 (x+0,75)+7
9) 3x -2,42 + 0,8= 3,38 - 0,2x
10) 9 ( x+3) + 6 = 4 ( 5x +9 )
a) -3x(x+2)²+(x+3)(x-1)(x+1)-(2x-5)²
b) 2(x-3)(x+3)(x+2)-(x-1)(x²-3)-5x(x+4)²-(x-5)²
c) 2x (x - 4)²(x + 5)(x - 2)(x + 2)+2(x + 5)² - (x - 1)²
d) (x + 5)² - 4 x (2 x + 3)²(2 x - 1)(x + 3)(x- 3)
e) -2 x( 3 x + 2)(3 x -2)+ 5( x + 2)²- (x -1) (2 x - 1)(2x +1)
f) (7 x - 8)(7 x + 8) - 10(2x + 3)² + 5 x (3x - 2)² - 4 (x - 5)².
g) (x²- 3)(x² + 3)- 5x²(x + 1) -(x² - 3x) (x² - 2x) + 4x(x + 2)².
Câu 1 : Giải phương trình
a. 5(x-3)-4=2(x-1)
b. 5-(6-x)=4(3-2x)
c. (3x+5)(2x+1)=(6x-2)(x-3)
d. (x+2)2 + 2(x-4)=(x-4)(x-2)
Bài 2 : Giải phương trình
a) x/3 - 5x/6 - 15x/12 = x/4 - 5
b) 8x-3/4 - 3x-2/2 = 2x-1/2 + x+3/4
c) x-1/2 - x+1/15 - 2x-13/6 = 0
d) 3(3-x)/8 + 2(5-x)/3 = 1-x/2 - 2
e) 3(5x-2)/4 - 2 = 7x/3 - 5(x-7)
Bài 3 Giải phương trình
a) (5x-4)(4x+6)=0
b) (x-5)(3-2x)(3x+4)=0
c) (2x+1)(x2+2)=0
d) (8x-4)(x2+2x+2)=0
Bài 4 Giải phương trình
a) (x-2)(2x+3)=(x-1)(x-2)
b) (2x+5)(x-4)=(x-5)(4-x)
c) 9x2 -1 =(3x+1)(2x-3)
d) (x+2)2=9(x2-4x+4)
e)4(2x+7)2 -9(x+3)2 =0
Bài 5 Giải phương trình
a) (9x2 -4)(x+1)=(3x+2)(x2 -1)
b) (x-1)2 -1+x2 =(1-x)(x+3)
c) x4 +x3 3+x+1=0
Giải phương trình:
1. (x - 5)2 + (x + 3)2 = 2(x - 4)(x + 4) - 5x + 7
2. (x + 3)(x - 2) - 2(x + 1)2 = (x - 3)2 - 2x2 + 4x
3. (x + 1)3 - (x + 2)(x - 4) = (x - 2)(x2 + 2x + 4) + 2x2
4. (x - 2)3 + (x - 5)(x + 5) = x(x2 - 5x) - 7x + 3
5. (x + 4)(x2 - 4x + 16) - x(x - 4)2 = 8(x - 3)(x + 3)
Câu 1. Giải các phườn trình sau:
a, 3x+6=0
b, 2x-10=0
c, 3x-7=11
d, 3x-9=0
e, 3x(2-x) =15(x-2)
f, (x+5)(x+4)=0
g, x(x+4)=0
h, (2x -4)(x-2)=0
i, (x+1/5)(2x-3)=0
k, x²-4x=0
m, 4x²-1=0
n, x²-6x+9=0
l, (3x-5)²-(x+4)²=0
o, 7x(x+2)-5(x+2)=0
p, 3x(2x-5)-4x+10=0
q, (2-2x)-x²+1=0
r, x(1-3x)=5(1-3x)
s, 2x-3/4+x+1/6=3
t, x-3/4-2x+1/3=x/6
u, x+1/13+x+2/12=x+3/11+x+4/10
v, 2x+1/15+2x+2/14=2x+3/13+2x+4/12
Giúp e nha mn. E cảm ơn trc ạ!