\(\Leftrightarrow\left(x^2-x-3\right)\left(x^2+x-1\right)=0\)
hay \(x\in\left\{\dfrac{1+\sqrt{13}}{2};\dfrac{1-\sqrt{13}}{2};\dfrac{-1+\sqrt{5}}{2};\dfrac{-1-\sqrt{5}}{2}\right\}\)
GIAI BAT PHUONG TRINH :
( 2x + 1)( 3 - 2x)( 1 - x) > 0
giai phuong trinh : x4 + 2x3 +5x2 -4x-12=0
Bai 1 ; Giai phuong trinh
(x3 - x2) - 4x2 + 8x - 4 = 0
giai phuong trinh: b,|x+4|+|3x-6|=4x-3
tim gia tri cua m,biet rang 1 trong 2 phuong trinh sau day nhan x=-1 lam nghiem,phuong trinh con lai nhan x=5 lam nghiem : (1-x)(x^2+1)=0 va (2x^2+7)(8-mx)=0
giai phuong trinh
x4+9=5x(3-x2)
giai phuong trinh x^2+y^2+z^2=y(x+z)
giai phuong trinh
\(\dfrac{6}{x^2+2}+\dfrac{12}{x^2+8}=3-\dfrac{7}{x^2+3}\)
giai phuong trinh
(x-4)(x-5)(x-6)(x-7)=1680
