<=> x^2 - 4x - 4 + 6 ( x^2 + 2x + 1 ) - ( x^3 - 27 ) = 97
=> x^2 - 4x - 4 + 6x^2 + 12x + 6 - x^3 + 27 = 97
=> 7x^2 + 8x + 29 - x^3 = 97
=> x^3 - 7x^2 - 8x + 97 - 29 = 0
=> x^3 - 7x^2 - 8x + 68 = 0
Mình giải sai thì phải
Tìm x biết (x-2)^3+6(x+1)^2-(x-3)(x^2+3x+9)=97
tìm x
a) 5x(x-3)(x+3)-(2x-3)^2- 5(x+2)^2 +34x(x+2)=1
b) (x-2)^3+ 6(x+1)^2 - (x-3)(x^2+3x+9)=97
Bài 2: Tìm x biết:
1,x\(^2\)+4x+4=25
2,(5-2x)\(^2\)-16=0
3,(x-3)\(^3\)-(x-3)(x\(^2\)+3x+9)+9(x+1)\(^2\)=15
4,3(x+2)\(^2\)+(2x-1)\(^2\)-7(x-3)9x+3)=36
5,(x-3)(x\(^2\)+3x+9)+x(x+2)(2-x)=1
6,(2x+1)\(^2\)-4(x+2)\(^2\)=9
7,(x+3)\(^{^{ }2}\)-(x-4)(x+8)=1
tim x
a) 5x(x-3)(x+3)-(2x-3)2 - 5(x+2)3 +3x(x+2)=1
b) (x-2)3 +6(x+1)2 -(x-3)(x2 +3x+9)=97
Rút gọn
(x^4-3x^2+9).(x^2+3)-(3+x^2)
(x-3)^3-(x-3).(x^2+3x+9+6.(x+1)^2
Tìm x
(x-2)^3-(x-3).(x^2+3x+9)+6.(x+1)^2=49
(x+2).(x^2-2x+4-x.(x^2+2)=15
tìm x, biết
a) $5x\left(x-3\right)\left(x+3\right)-\left(2x-3\right)^2-5\left(x+2\right)^3+34x\left(x+2\right)=1$
b) $\left(x-2\right)^3+6\left(x+1\right)^2-\left(x-3\right)\left(x^2+3x+9\right)=97$
1 li-ke cho bạn trả lời chi tiết, và đúng nhất nha
Tìm x :
a) x (3x + 1) + (x -1)2 - (2x + 1)(2x -1) = 0
b) (x + 1)3 + (2 - x)3 - 9(x - 3)(x+3) = 0
c) (x - 1)3 - (x + 3)(x2 - 3x + 9) + 3x2 = 25
d) (x + 2)3 - ( x +1)(x2 - x + 1) - 6(x - 1)2 = 23
e) (x + 3)(x2 - 3x + 9) - x(x - 2)(x+2) + 11 = 0
f) x(x - 3) - x + 3 = 0
Bài 1: Tìm x:
1) (x-3)3 -( x-3)(x2+ 3x+9) +6( x+1)2+ 3x2 = -33
2) (X-3)( X2+ 3X+9) - X(X-2)( 2+X) = 1
3) (X+2)(X2 - 2X+4) – X(X-3)(X+3) = 26
Bài 2: Tìm x, biết: a) (x+2)(x² -2x+4)-x(x²+2)=15 b) (x-2)³-(x-4)(x² + 4x+16) + 6(x+1)=49 c) (x - 1)³ + (2 - x)(4 + 2x + x²)+ 3x(x + 2) = 16 d) (x - 3)³ - (x - 3)(x² + 3x + 9) + 9(x + 1)² = 15
