có: x(x+3)(x^2+3x+4)=-4
\(\Leftrightarrow\)(x^2+3x)(x^2+3x+4)+4=0
\(\Leftrightarrow\)(x^2+3x)\(^2\)+4(x^2+3x)+4=0
\(\Leftrightarrow\)(x^2+3x+2)\(^2\)=0
\(\Leftrightarrow\)x\(^2\)+3x+2=0
\(\Leftrightarrow\)(x+1)(x+2)=0
\(\Leftrightarrow\)x+1=0 hoặc x+2=0
*) Nếu x+2=0\(\Leftrightarrow\)x=-2
*) Nếu x+1=0\(\Leftrightarrow\)x=-1
Vậy S={ 2;-1}
GIAI PHUONG TRINH
(X-5)*(X-3)-2*(3X-4)=(X-3)^2+!2
giai cac phuong trinh sau
(x-1)3+(2-x)(4+2x+x2)+3x(x+2)=17
Giai Phuong Trinh:
a)2(x-2)+x-2=3(x-2)
b)4(1-x)+3x=1-x
c)3(x-2)+4(1-x)=-(6+x)
giai phuong trinh
(x-1)3+(2-x)(4+2x+x2)+3x(x+2)=17
tim x???
bài 1 : giai các phuong trinh sau :
a, (9x^2-4) (x+1) = (3x+2) (x^2-1)
b, x^4+ x^3 +x +1=0
c,x^5 - 5x^3 +4x=0
giai bat phuong trinh sau: (5x-2/3)-(2x2 - x)/2 >= [x(1-3x)] /3 - (5x)/4
Giai phuong trinh, bat phuong trinh sau:
x-3/x-2 + x-2/x-4 = 16/5x-4/5 - x + 4 > x/3 - x-2/2 Giai giup minh nhe. Cam on rat nhieu.giai phuong trinh
3|3x+1|+4=13
4(x+5)-3|2x-1|=10
giai phuong trinh x^2+2x+3=(x^2+x+1)(x^4+x^2+4)