ta có pt
<=>\(\left(x+1\right)^2\left(x-2+x+2\right)=-24\Leftrightarrow2x\left(x+1\right)^2=-24\Leftrightarrow x\left(x^2+2x+1\right)=-12\)
<=>\(x^3+2x^2+x+12=0\Leftrightarrow x^3+3x^2-x^2-3x+4x+12=0\Leftrightarrow\left(x+3\right)\left(x^2-x+4\right)=0\)
đến đây thì dễ rồi nhé ^_^
a, (3x-7)^2-4(x+1)^2=0
b,(x+1)^2.(x+2)+(x+1)^2.(x-2)=-24
giai phuong trinh nha
giai phuong trinh
a , x(x+1)(x-1)(x+2)= 24
b , (x-4)(x-5)(x-6)(x-7) = 1680
cho phuong trinh (an x):(m-1)x +m^2 -1=0(1) a,giai phuong trinh (1) voi m=2 b, tim gia tri cua m sao cho phuong trinh (1) nhan x=3 lam nghiem
mk dang can gap .cam on truoc a
giai phuong trinh :
(x^2+x+1)^2=3(x^4+x^2+1)
giai phuong trinh (x-1)(x-4) + (x-3)(x-2)=2
cho phuong trinh an x: \(\frac{x+a}{x+2}+\frac{x-2}{x-a}=2\)
a) giai phuong trinh vs a=4
b)Tim cac gtri cua a sao cho phuong trinh nhan x=-1 lam nghiem
giai phuong trinh x^2+2x+3=(x^2+x+1)(x^4+x^2+4)
giai phuong trinh
x+1/x^2+x+1 - x-1/x^2-x+1 = 3/x(x^4+x^2+1)
Giai phuong trinh x^2+(1/x^2)+16y^2+(1/y^2)=10
