a) (2x+3)(4x2-6x+9)-2(4x3-1)+(8x-1)=15
<=>8x3+27-8x3+2+8x-1=15
<=>8x+28=15
<=>8x=-13
<=>x=-13/8
b) (x+3)3-(x+9)(x2+27)-(5x-216) = 3x-4
<=>x3+9x2+27x+27-x3-27x-9x2-243-5x+216=3x-4
<=>-5x=3x-4
<=>8x=4
<=>x=1/2
x^2-6x+9=2x(x-3)
(x+3)^2+(x+2)(x-2)
(3x-1)^3-27(x+3)(x^2-3x+9)
x^4+2x^3+x
(3x+y)^2-4(2y-3x)^2
ai giai giup minh vs minh can ngay ngay mai
giai PT
a,(y-1)2=9
b,(x-4)2-25=0
c,(x-3)2-(x-1)2=0
d,(3x-7)2-4(x+1)2=0
e,2x(x-5)-x(2x+3)=26
f,5x(x-1)=x-1
g,x3+2x-3=0
h,x3-5x2+8x-4=0
i,x3-7x+6=0
k,x3-9x2+6x+16=0
giai PT
a,(y-1)2=9
b,(x-4)2-25=0
c,(x-3)2-(x-1)2=0
d,(3x-7)2-4(x+1)2=0
e,2x(x-5)-x(2x+3)=26
f,5x(x-1)=x-1
g,x3+2x-3=0
h,x3-5x2+8x-4=0
i,x3-7x+6=0
k,x3-9x2+6x+16=0
giai PT
a,(y-1)2=9
b,(x-4)2-25=0
c,(x-3)2-(x-1)2=0
d,(3x-7)2-4(x+1)2=0
e,2x(x-5)-x(2x+3)=26
f,5x(x-1)=x-1
g,x3+2x-3=0
h,x3-5x2+8x-4=0
i,x3-7x+6=0
k,x3-9x2+6x+16=0
tìm x;y: 1) 9x^2-6x=9
2) (2x+3)^2 + 2(2x+3)(x-2)+(2-x)^2=4
3)(x+3)(3-x)=5
4)(3x+2)(9x^2-3x+1)=2
GPT:
\(\frac{13-x}{x+3}+\frac{6x^2+6}{x^4-8x^2-9}-\frac{3x+6}{x^2+5x+6}-\frac{2}{x-3}=0\)
1)\(\frac{8xy\left(3x-1\right)^3}{12x^3\left(1-3x\right)}\)
2)\(\frac{5x^3+5x}{x^4-1}\)
3)\(\frac{9-\left(x+5\right)^2}{x^2+4x+4}\)
4)\(\frac{32x-8x^2+2x^3}{x^3+64}\)
Giải phương trình
a) (3x-1)2+(5-x)(3x-1)=0
b) (x+3)(2-3x)=x2+6x+9
c) (x-1) ( x2 +5x+2)( x3 -1)=0
d) x2 +( x+3)(10-2x)=9
