(-3+x^2)(-3+x^2)(-3+x^2)(-3+x^2)(-3+x^2)=1
(-3+x2)5=1
-3+x2 = 1
x2 = 4
x = \(\pm2\)
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. Tìm x biết rằng:
a)(x + 1)3 – (x + 2)(x – 1)2 – 3(x – 3)(x + 3) = 5
b)(x + 1)3 + (x – 1)3 = (x + 2)3 + (x – 2)3
c) (x + 1)3 - (x - 1)3 - 6(x - 1)2 = -10
Tìm x biết: (x + 2)^2 - (x + 2)(x - 3) = 0
Tìm x biết :
a,(x+2)^2-(x+2)(x-3)=0
b,2x^3-4x^2+2x=0
c,(x-1)^2-(2x+1)^2=0
1) 3(x-2) + 4(x-1) = 25 2) (5x-3)(x-2) = (x-1)(x-2) 3) (x-2)² = 4(x-1)²
Bài 2: Tìm x biết:1,x^2+4x+4252,(5-2x)^2-1603,(x-3)^3-(x-3)(x^2+3x+9)+9(x+1)^2154,3(x+2)^2+(2x-1)^2-7(x-3)9x+3)365,(x-3)(x^2+3x+9)+x(x+2)(2-x)16,(2x+1)^2-4(x+2)^297,(x+3)^{^{ }2}-(x-4)(x+8)1
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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
tìm x, biết
a)2x.(x+3)-3.(x^2+1)=x+1-x.(x-2)
b)(x+2).(x-2)-(x-3).(x+5)=0
c)(2x-1).(3-x)+(x-2).(x+3)=(1-x).(x-2)
Tìm x biết:
1> (x+1)^2-(x+2)^2=3
2> (x-1)(x+1)-(x-3)^2=0
3> (x+1)^3-x^2(x+2)-(x-1)^2=0
4> (x+1)(x^2-x+1)-x^2(x+2)+2(x+3)^2=0
tìm x, biết :
d)(x - 3)(x^2 + 3x + 9) + x(x + 2)(2 - x) = 1
e) (x + 1)^3 - (x - 1)^3 - 6(x - 1)^2 = -19
Viết theo HĐT
a) (x - 1)3
b) (2x + 3y)3
c) x3– 64.
d) 27x3+ 8y3
.
Bài 3. Tìm x, biết:
a) (x – 2)3– x2(x – 6) = 5
b) (x – 1)(x2+ x + 1) – x(x + 2)(x – 2) = 4
c) (x + 2)3– (x + 2) = 0
Bài 4. Tìm x biết (x + 2021)3+ (3x - 2022)3=(4x– 1)3
tìm x biết (x-2)(x+2)-x(x+3)=5
A: x=3 B: x=-3 C:x=1/3 D: x=-1/3
Tìm x, biết:
a.(x-3).(x+3)=(x-5)^2
b.(2x+1)^2-4x.(x-1)=17
c.(3x-2).(3x+2)-9.(x-1).x=0
d.(3-x)^3-(x+3)^3=36x^2-54x
e.x^3-6x^2+12x-8=27