Các câu hỏi tương tự
Giải phương trình1) 2x ( x – 3 ) + 5 ( x – 3 ) 02) ( x2 – 4 ) – ( x – 2 ) ( 3 – 2x ) 03) ( 2x – 1 )2 – ( 2x + 5 )2 114) ( 2x + 1 )2 ( 3x – 5 ) 4x2 – 15) 3x2 – 5x – 8 06) ( 2x + 1 )2 ( 3x – 5 ) 4x2 – 17) 3x2 – 5x – 8 08) left|x-5right|39) left|2x-5right|3-x10) left|2x+1right|left|x-1right|11) dfrac{5x+2}{6}-dfrac{8x-1}{3}dfrac{4x+2}{5}-512) dfrac{3x+2}{2}-dfrac{3x+1}{6}2x+dfrac{5}{3}
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Giải phương trình
1) 2x ( x – 3 ) + 5 ( x – 3 ) = 0
2) ( x2 – 4 ) – ( x – 2 ) ( 3 – 2x ) = 0
3) ( 2x – 1 )2 – ( 2x + 5 )2 = 11
4) ( 2x + 1 )2 ( 3x – 5 ) = 4x2 – 1
5) 3x2 – 5x – 8 = 0
6) ( 2x + 1 )2 ( 3x – 5 ) = 4x2 – 1
7) 3x2 – 5x – 8 = 0
8) \(\left|x-5\right|=3\)
9) \(\left|2x-5\right|=3-x\)
10) \(\left|2x+1\right|=\left|x-1\right|\)
11) \(\dfrac{5x+2}{6}-\dfrac{8x-1}{3}=\dfrac{4x+2}{5}-5\)
12) \(\dfrac{3x+2}{2}-\dfrac{3x+1}{6}=2x+\dfrac{5}{3}\)
(2x-3)2+4x2-9=(2x-3)(3x+5)
câu 1:giải các pt và bpt sau:
a,17x - 5(x+3)= 2x + 5
b,3/x+2 - 5/x-2 = 11x + 23/(x+2)(x-2)
c,5x + 7 ≥ 3(x-1)
d,3x-1/x+1 = -2/5
e,(2x-1)(2x+1)= 4x2 + 3x + 2
f,x-3^3 -7+3x
g,7x-5 < 2(4x-1)+7
Bài 1: Giải các phương trình dưới đây1) x2 - 9 (x - 3)(5x +2)2) x3 - 1 (x - 1)(x2 - 2x +16)3) 4x2 (x - 1) - x + 1 04) x3 + 4x2 - 9x - 36 05) (3x + 5)2 (x - 1)26) 9 (2x + 1)2 4 (x - 5)27) x2 + 2x 158) x4 + 5x3 + 4x2 09) (x2 - 4) - (x - 2)(3 - 2x) 010) (3x + 2)(x2 - 1) (9x2 - 4) (x + 1)11) (3x - 1)(x2 + 2) (3x - 1)(7x - 10)12) (2x2 + 1) (4x - 3) (x - 12)(2x2 + 1)
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Bài 1: Giải các phương trình dưới đây
1) x2 - 9 = (x - 3)(5x +2)
2) x3 - 1 = (x - 1)(x2 - 2x +16)
3) 4x2 (x - 1) - x + 1 = 0
4) x3 + 4x2 - 9x - 36 = 0
5) (3x + 5)2 = (x - 1)2
6) 9 (2x + 1)2 = 4 (x - 5)2
7) x2 + 2x = 15
8) x4 + 5x3 + 4x2 = 0
9) (x2 - 4) - (x - 2)(3 - 2x) = 0
10) (3x + 2)(x2 - 1) = (9x2 - 4) (x + 1)
11) (3x - 1)(x2 + 2) = (3x - 1)(7x - 10)
12) (2x2 + 1) (4x - 3) = (x - 12)(2x2 + 1)
Bài 1 giải phương trình:a) (4x2+4x+1)-x20b) x2-2x+14c) x2-5x+60Bài 2: giải phương trìnha) dfrac{2x-5}{x+5} 3b) dfrac{5}{3x+2} 2x-1c) dfrac{x^2-6}{x} x+dfrac{3}{2}d) dfrac{1}{x-2}+3 dfrac{x-3}{2-x}e) dfrac{3x-2}{x+7}dfrac{6x+1}{2x-3}f) dfrac{x-2}{x+2} - dfrac{3}{x-2}dfrac{2left(x-11right)}{x^2-4}
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Bài 1 giải phương trình:
a) (4x2+4x+1)-x2=0
b) x2-2x+1=4
c) x2-5x+6=0
Bài 2: giải phương trình
a) \(\dfrac{2x-5}{x+5}\)= 3
b) \(\dfrac{5}{3x+2}\)= 2x-1
c) \(\dfrac{x^2-6}{x}\)= x+\(\dfrac{3}{2}\)
d) \(\dfrac{1}{x-2}\)+3= \(\dfrac{x-3}{2-x}\)
e) \(\dfrac{3x-2}{x+7}\)=\(\dfrac{6x+1}{2x-3}\)
f) \(\dfrac{x-2}{x+2}\) - \(\dfrac{3}{x-2}\)=\(\dfrac{2\left(x-11\right)}{x^2-4}\)
Bài 5. Tìm x, biết:
a) x (2x - 7) + 4x -14 = 0
b) x3 - 9x = 0
c) 4x2 -1 - 2(2x -1)2 = 0
d) (x3 - x2 ) - 4x2 + 8x - 4 = 0
Bài 1: Rút gọn
C) (x2 - 3) (x2 +3) - 5x2 (x + 1)2 - (x2 - 3x) ( x2 - 2x) + 4x (x + 2)2
D) -6x2 (x + 5)2 - ( x - 3)2 + (x2 - 2) (2x2 + 1) - 4x2 ( 3x - 4)2
VC
29 tháng 11 2021 lúc 21:58
cộng phân thức đại số :
( 3 - 3x ) / 2x + ( 3x - 1 ) / ( 2x - 1 ) + ( 11x - 5 ) / ( 2x - 4x2)
Giải các phương trình tích sau:1.a)(3x – 2)(4x + 5) 0 b) (2,3x – 6,9)(0,1x + 2) 0c)(4x + 2)(x2 + 1) 0 d) (2x + 7)(x – 5)(5x + 1) 02. a)(3x + 2)(x2 – 1) (9x2 – 4)(x + 1) b)x(x + 3)(x – 3) – (x + 2)(x2 – 2x + 4) 0c)2x(x – 3) + 5(x – 3) 0 d)(3x – 1)(x2 + 2) (3x – 1)(7x – 10)3.a)(2x – 5)2 – (x + 2)2 0 b)(3x2 + 10x – 8)2 (5x2 – 2x + 10)2c)(x2 – 2x + 1) – 4 0 d)4x2 + 4x + 1 x24. a) 3x2 + 2x – 1 0 b) x2 – 5x + 6 0c) x2 – 3x + 2 0 d) 2x2 – 6x + 1 0 ...
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Giải các phương trình tích sau:
1.a)(3x – 2)(4x + 5) = 0 b) (2,3x – 6,9)(0,1x + 2) = 0
c)(4x + 2)(x2 + 1) = 0 d) (2x + 7)(x – 5)(5x + 1) = 0
2. a)(3x + 2)(x2 – 1) = (9x2 – 4)(x + 1)
b)x(x + 3)(x – 3) – (x + 2)(x2 – 2x + 4) = 0
c)2x(x – 3) + 5(x – 3) = 0 d)(3x – 1)(x2 + 2) = (3x – 1)(7x – 10)
3.a)(2x – 5)2 – (x + 2)2 = 0 b)(3x2 + 10x – 8)2 = (5x2 – 2x + 10)2
c)(x2 – 2x + 1) – 4 = 0 d)4x2 + 4x + 1 = x2
4. a) 3x2 + 2x – 1 = 0 b) x2 – 5x + 6 = 0
c) x2 – 3x + 2 = 0 d) 2x2 – 6x + 1 = 0
e) 4x2 – 12x + 5 = 0 f) 2x2 + 5x + 3 = 0
Giải PT
1 ) (2x + 1)(3x – 2) = (5x – 8)(2x + 1)
2) 4x2 -1 = (2x + 1)(3x – 5)
3) (x + 1)2 = 4(x2 – 2x + 1)
4) 2x3+ 5x2 – 3x = 0
5) {2x{ = 3x – 2
6) x + 15 = 3x – 1
7) 2 – x = 0,5x – 4