(3x-2)(4x+5)=0
(3x−2)(4x+5)=0⇔[3x−2=04x+5=0\left(3x-2\right)\left(4x+5\right)=0\Leftrightarrow\left[{}\begin{matrix}3x-2=0\\4x+5=0\end{matrix}\right.(3x−2)(4x+5)=0⇔[3x−2=04x+5=0 ⇔[x=23x=−54\Leftrightarrow\left[{}\begin{matrix}x=\dfrac{2}{3}\\x=-\dfrac{5}{4}\end{matrix}\right.⇔⎣⎢⎡x=32x=−45
vậy x=23x=\dfrac{2}{3}x=32 hoặc x=−54x=-\dfrac{5}{4}x=−45
Giải phương trình:
x2 - 11x + 10
y2(y-1)(y+1) = 72
giải pt
(2x+7)2=9(x+2)2\left(2x+7\right)^2=9\left(x+2\right)^2(2x+7)2=9(x+2)2
(x+2)2=9(x2−4x+4)\left(x+2\right)^2=9\left(x^2-4x+4\right)(x+2)2=9(x2−4x+4)
(5x−3)2−(4x−7)2=0\left(5x-3\right)^2-\left(4x-7\right)^2=0(5x−3)2−(4x−7)2=0
(x-1)3+(2x+3)3=27x3+8
(2x−1)2=49\left(2x-1\right)^2=49(2x−1)2=49
giải phương trình
1/ x3 + (x + 1)3 + (x + 2)3 = (x + 3)3
2/ (x + 1)4 + (x + 3)4 = 82
giải pt:
a) x4 + 2x3 -12x2 -13x +42
b) (x -1) (x+2 )(x+4)(x+7)=16
c) x4 + 2x3 +5x2 +4x -12 = 0
(3x-1)(x^2+2)=(3x-1)(7x-10)
Giải các phương trình :
a) x4 -16x2+32x-16 = 0
b) x(x2-1)(x-2) = 3
c) x4(x−1)2+2x2x+1=3\dfrac{x^4}{\left(x-1\right)^2}+\dfrac{2x^2}{x+1}=3(x−1)2x4+x+12x2=3
d) (x+1)4+(x+3)4=16
e) x4-2x3-2x-1=0
f) 2x3+x2-13x+6=0
g) x3+3x2-2x-6=0
