\(PT\Leftrightarrow x\left(x^2-9\right)-\left(x^3+8\right)=0\Leftrightarrow-9x-8=0\Leftrightarrow x=\dfrac{-8}{9}\)
Đúng 2
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Bài 3: Phương trình đưa được về dạng ax + b = 0
Các câu hỏi tương tự
x2-4x+4=9
(x-7)(2x+5)=0
4x2-6x=0
4(3x-2)-3(x-4)=7x+10
2x(x+3)+5 (x+3)=0
2x (x-3)-5 ( x-3)=0
x3-6x2+5x=0
Bài 1 : Giải các phương trình sau :
1) (x – 2)(x – 5) (x – 3)(x – 4)
2) ( 6x + 2)(x – 2) 2x(3x – 5)
3) (x – 2) 2 (x – 3)(x + 2)
4) (x–1)(x +3) – (x+2)(x–3) 0
5) (x–2)(x –5) – (x–3)(x–4) 0
6) (3x – 2)(4x + 3) 2x(6x – 1)
7) 4x 2 – (2x + 1)(2x – 1) 0
8) (4x–5)(x+3) (2x – 3)(7+2x)
9) (x + 3)(x – 2) (x + 1) 2
10) (x+7)(x–7) + x 2 – 2 2(x 2 +5)
11) (x–1) 2 + (x+3) 2 2(x– 2)(x+2)
12) (x – 5) 2 (x + 3) 2 + 2
13) (3x + 2) 2 – (3x – 2) 2 5x + 38
Đọc tiếp
Bài 1 : Giải các phương trình sau :
1) (x – 2)(x – 5) = (x – 3)(x – 4)
2) ( 6x + 2)(x – 2) = 2x(3x – 5)
3) (x – 2) 2 = (x – 3)(x + 2)
4) (x–1)(x +3) – (x+2)(x–3) = 0
5) (x–2)(x –5) – (x–3)(x–4) = 0
6) (3x – 2)(4x + 3) = 2x(6x – 1)
7) 4x 2 – (2x + 1)(2x – 1) = 0
8) (4x–5)(x+3) = (2x – 3)(7+2x)
9) (x + 3)(x – 2) = (x + 1) 2
10) (x+7)(x–7) + x 2 – 2 = 2(x 2 +5)
11) (x–1) 2 + (x+3) 2 = 2(x– 2)(x+2)
12) (x – 5) 2 = (x + 3) 2 + 2
13) (3x + 2) 2 – (3x – 2) 2 = 5x + 38
1) Phương trình dạng ax+b=0
1) 2x+x+12=0
2) x-5=3-x
3)2x-(3-5x)=4(x+3)
4)2x+3/3=5-4x/2
5) x-3/5=6- 1-2x/3
6) 3x-2/6 -5=3-2(x+7)/4
7) 3x-7/2+ x+1/3= -16
8) x- x+1/3=2x+1/5
giải các phương trình
a) 2(x-2)+5x(x-1)=5x
b) 2x(x-3)+5(x-3)=0
c) x^2-5x+6=0
d) (x^2-4)-(x-2)(3-2x)=0
e)2x^3+6x^2=x^2+3x
f)(2x+5)^2=(x+2)^2
Giải phương trình:
a)1/3x + 5/3 = 0
b)x – 3/2 = 4/3
c)x –2 = 2x +4
d)1 –(2x + 3) = 3(x–2)
e)x(2x–3)=0
f)3(x+1)+x(x+1)=0
Giúp mik vs
1) Phương trình dạng ax+b=0
1) 2x+x+12=0
2) x-5=3-x
3)2x-(3-5x)=4(x+3)
4)2x+3/3=5-4x/2
1. ^{x^3+x^2+x+10}
2. left(2x-4right)left(3x+1right)+left(x-2right)^20
3.x^2-5x+60
4. x^2-x-60
5. 2x^2-3x4left(3-2xright)
6. 3left(x-11right)-2left(x+11right)2011
7. left(x-4right)^2-left(x+2right)left(x-6right)0
8. left(x^2-9right)left(x+2right)0
9.left(2x-1right)^24xleft(x-1right)
10. 6left(x+2right)-5x15
Đọc tiếp
1. \(^{x^3+x^2+x+1=0}\)
2. \(\left(2x-4\right)\left(3x+1\right)+\left(x-2\right)^2=0\)
3.\(x^2-5x+6=0\)
4. \(x^2-x-6=0\)
5. \(2x^2-3x=4\left(3-2x\right)\)
6. \(3\left(x-11\right)-2\left(x+11\right)=2011\)
7. \(\left(x-4\right)^2-\left(x+2\right)\left(x-6\right)=0\)
8. \(\left(x^2-9\right)\left(x+2\right)=0\)
9.\(\left(2x-1\right)^2=4x\left(x-1\right)\)
10. \(6\left(x+2\right)-5x=15\)
Câu 1: Giải các phương trình sau:
a) 3x-2(x-3)=0
b) (x+1) (2x-3) = ( 2x -1) (x +5)
c) 2x/ x-1 -x/x+1 =1
d) (2x +3) (3x-5)=0
e) x-2/x+2-3/x-2 = 2(x-11)/ x2
giúp mình với ạ huhu\(^{ }\)
giải phương trình
a) left(5x+2right)left(x-7right)0
b) left(x^2-1right)left(x+3right)0
c) x^2-x-60
d) x^2+x-120
e) 15left(x+9right)left(x-3right)left(x+21right)0
g) left(x^2+1right)left(x^2+4x+4right)0
i) x^4+2x^3-2x^2+2x-30
h) x^2+5x+60
Đọc tiếp
giải phương trình
a) \(\left(5x+2\right)\left(x-7\right)=0\)
b) \(\left(x^2-1\right)\left(x+3\right)=0\)
c) \(x^2-x-6=0\)
d) \(x^2+x-12=0\)
e) \(15\left(x+9\right)\left(x-3\right)\left(x+21\right)=0\)
g) \(\left(x^2+1\right)\left(x^2+4x+4\right)=0\)
i) \(x^4+2x^3-2x^2+2x-3=0\)
h) \(x^2+5x+6=0\)